- Bank - Harp Arpeggios (Heard twice in "Buckled Tracks and Bumpy Cars" and thrice in "Skiff and the Mermaid".)
- Bank - Up & Down (Heard in "Forever and Ever".)
- Cinesound Klaxon Sound 1 (Heard multiple times in "Emily to the Rescue".)
- Duck Whistle (Used for Duck's whistle in a normal pitch and Oliver's in a low pitch.)
- Edward Whistle (Used for Edward's whistle in a normal pitch, Percy, Scruff and Logan's in a high pitch, and Emily and Henry's in a low pitch.)
- Fonic, Steam Locomotive Chugging Sounds (Used extensively for the sounds of the steam engines chugging.)
- Freesound, S18-18 Whistling rockets.wav (Heard once in "Sodor Surprise Day".)
- Gordon Whistle
- H-B SQUEEZE, CARTOON - HORN SQUEEZE, MEDIUM 02 (Mainly used for the "Guess Who?" puzzles segments in the earlier seasons. Both the second half of the sound and the full sound are used.)
- H-B ZIP, CARTOON - LOW WHISTLE ZING OUT
- Hollywoodedge, Air Brake Hiss Truck PE079301 (Heard once in "Unscheduled Stops".)
- Hollywoodedge, Alarm 1 Contemporary TE012001 (Heard once in "A New Arrival" and "World of Tomorrow".)
- Hollywoodedge, Animal Stinger Fast SDT035901 (Heard multiple times in "The Fastest Red Engine on Sodor" when James passes by at high speeds.)
- Hollywoodedge, Baby Crying Slowly PE144001 (Used various times for Little Thomas when he cries in "Thomas the Babysitter".)
- Hollywoodedge, Big Metal Lever Pull PE365801 (Heard once in "Steamy Sodor" when Kevin backs into the button that starts the hoist at the Steamworks.)
- Hollywoodedge, Bird Duck Quacks Clos PE020501 (Heard twice in "Mucking About", "The Missing Breakdown Train" and "Thomas and the Royal Engine".)
- Hollywoodedge, Bird Rooster 2 Crow PE021501 (Heard once in "Thomas and the Royal Engine".)
- Hollywoodedge, Bird Seagull Four Sin PE021601 (Heard once in "A New Arrival".)
- Hollywoodedge, Boings Bouncing Boin AC020701 (Mainly used for the "Guess Who?" puzzles segments in the earlier seasons.)
- Hollywoodedge, Bone Breaks Blood Com FS044106 (Heard once in "World of Tomorrow", when Sir Topham Hatt gets splattered with strawberry milkshake from Dr. Holyfield's milkshake machine.)
- Hollywoodedge, Bubbles Gurgling Up PE052701 (Heard once in "Gordon Gets the Giggles".)
- Hollywoodedge, Car Crash Small 2 Impc PE112001 (Low pitch and speed; heard once in "School of Duck".)
- Hollywoodedge, Cattle Cow Moo Bellow AT041501 (Heard once in "Toby's New Whistle".)
- Hollywoodedge, Chickens Clucks Farm AT084301 (Heard once in "Trusty Trunky".)
- Hollywoodedge, Children Sml Grp Yell PE954901/Small Group Kids Chee PE142801 (Heard once in "Mike's Whistle".)
- Hollywoodedge, Chimpanzee Screams AT050201 (Heard in "Thomas and the Monkey Palace".)
- Hollywoodedge, Chimpanzee Screams AT050301/Sound Ideas, CHIMPANZEE - EXCITED CALL, ANIMAL, MONKEY, APE 02 (Heard thrice in "Thomas and the Monkey Palace".)
- Hollywoodedge, Chimpanzee Screeche PE026201 (Heard in "Thomas and the Monkey Palace".)
- Hollywoodedge, Cow Moo SS022201 (Heard once in "Toad's Adventure".)
- Hollywoodedge, Crash Metal Glass PE110801 (Heard once in the Mr. Perkins' Storytime segment, "Thomas Comes to Breakfast".)
- Hollywoodedge, Crash Metal Glass PE110901 (Heard once in "Thomas and the Rubbish Train".)
- Hollywoodedge, Crash Metal Shatter PE110201 (Heard twice in "World of Tomorrow".)
- Hollywoodedge, Crickets 1 BT020401/Night Ambience Light PE011701 (Heard in "Kangaroo Christmas".)
- Hollywoodedge, Drip Single Falls Liq PE041301 (Heard once in "The Fastest Red Engine on Sodor".)
- Hollywoodedge, Ducks Quacks Duck Qua AT085201
- Hollywoodedge, Elephant Honks Blows PE024901 (Heard twice in "Not Now, Charlie!")
- Hollywoodedge, Elephant Single Shor AT043401 (Heard once in "Trusty Trunky" and "Thomas Makes a Mistake".)
- Hollywoodedge, Elephant Trumpeting PE024801 (Heard thrice in "Not Now, Charlie!", "Thomas' Animal Ark; once in "Dowager Hatt's Busy Day", "Emily Saves the World", "Shankar's Makeover"; and often in "Nia and the Unfriendly Elephant".)
- Hollywoodedge, Federal Air Horn Sire PE080701 (8th horn only; used as Flynn and Hugo's siren.)
- Hollywoodedge, Gusts Heavy Cold Wind PE031601/Whistling Wind Stead PE033301 (Heard in "Flatbeds of Fear".)
- Hollywoodedge, Hammer Hitting An Anv TE037904/SoundDogs, Impacts & Crashes Metal - Anvil Hits - Metal Anvil Hits 05 (Can be heard being mixed with Sound Ideas, TRAIN, STEAM - SIGNAL FALLS when signals turn from red to green and when points are changed.)
- Hollywoodedge, Head Bonk Whorn 3 Typ CRT032401 (Heard once in "The Fastest Red Engine on Sodor".)
- Hollywoodedge, Heavy Chain Clanks CRT039901
- Hollywoodedge, Jews Harp 9 Various Je AC020101
- Hollywoodedge, Large Splash Or DiveW PE127201
- Hollywoodedge, Large Splash Or DiveW PE127401 (Slightly lower volumes; heard twice in "Stuck on You" when Butch knocks the metal poles into the water.)
- Hollywoodedge, Medium Exterior Crow PE140401 (Heard once in "Welcome Stafford" and thrice in "World of Tomorrow".)
- Hollywoodedge, Medium Exterior Crow PE140501 (Heard at low volume in "Samson and the Fireworks".)
- Hollywoodedge, Metal Creaks Machine FS015801 (Used for the engines brakes squeaking/squealing in earlier seasons.)
- Hollywoodedge, Metal Creaks Machine FS015802 (Used for the engines brakes squeaking/squealing in later seasons.)
- Hollywoodedge, Metal Debris StressC PE285001 (Heard once in "Percy and the Calliope" and "Thomas and the Monkey Palace")
- Hollywoodedge, Metal Hinge Creak CRT053501 (Heard often in "Springtime for Diesel".)
- Hollywoodedge, Metal Impacts Low Lar FS012301 (Mainly used for impacts and crashes.)
- Hollywoodedge, Metal Scrapes Bends FS012003 (Heard once in "Creaky Cranky".)
- Hollywoodedge, Monkeyunknown Screa AT057801 (Heard once in "Calm Down Caitlin" when Caitlin passes by the animal park.)
- Hollywoodedge, Multiple Ferry BoatS PE129701 (Used as Diesel 10's horn in a normal pitch in "The Missing Christmas Tree Decorations" and Gustavo's horn in a low pitch.)
- Hollywoodedge, Object Being Squashe PE105101 (Heard once in "Pop Goes Thomas" when one of the cakes that the bakers had made for Emily to pick up splatters on the ground.)
- Hollywoodedge, Owl Hoot Classic TE013201/Sound Ideas, BIRD, OWL - SINGLE OWL HOOTING, ANIMAL (Heard once in "A Shed for Edward".)
- Hollywoodedge, Pig Squeal MultipleH AT047601
- Hollywoodedge, Railroad Cars Coupli BB033101
- Hollywoodedge, Screams 1 Woman Singl PE133501
- Hollywoodedge, Screams 2 Woman Singl PE133601
- Hollywoodedge, Seagulls No Surf BT022101
- Hollywoodedge, Shave HairC Whistle CRT059001 (Used as Mike's whistle in a very high pitch.)
- Hollywoodedge, Sheep Bleat Single Cl AT048501 (Heard twice in "Very Important Sheep".)
- Hollywoodedge, Ship Horn 3D036001 (Used as Captain's horn.)
- Hollywoodedge, Ship Huge Low Pitched TE048201 (Heard once in “A Cranky Christmas” and "New Crane on the Dock".)
- Hollywoodedge, Sirens Close Perspec TE041701 (Heard once in "Buckled Tracks and Bumpy Trucks".)
- Hollywoodedge, Sky Rocket Loud High TE021701 (Heard once in "Number One Engine".)
- Hollywoodedge, Slowed Down Harsh Met PE343401
- Hollywoodedge, Sm Heavy Metal Door Sl PE185001 (Used for Dart's door in "Ol' Wheezy Wobbles".)
- Hollywoodedge, Small Hinge Squeak Hv PE188401 (Heard in "Ol' Wheezy Wobbles" and "Signals Crossed".)
- Hollywoodedge, Steam Train Whistle BB030201 (Used for Hiro's whistle in a low pitch and Toby's three-chime steam whistle in "Toby's New Whistle". and The Big Mean Engines whistle in a slightly higher pitch)
- Hollywoodedge, Sword Clanks Medium S FS031003
- Hollywoodedge, Sword Clanks Medium S FS031005
- Hollywoodedge, Tire Skids For Plane PE060901
- Hollywoodedge, Train Coupling Metal PE343501 (The 1st half is heard thrice in "Deep Trouble" when Monty falls on the rocks in the mineshaft during a fantasy sequence.)
- Hollywoodedge, Train Long From Dista PE064401
- Hollywoodedge, Train Wheels Squeak AHS018401 (Is sometimes used for the engines brakes squeaking/squealing in the earlier seasons.)
- Hollywoodedge, Train Whistle 3 Vario AC011601 (Used as Harvey's whistle in a low pitch.)
- Hollywoodedge, Train Whistle BlastT CT071401 (Used as Hugo's horn in "Engine of the Future" and "Hugo and the Airship".)
- Hollywoodedge, Transmission Gear Gr PE076301
- Hollywoodedge, Truck Air Horn Numero PE270701 (Used as Flynn's horn.)
- Hollywoodedge, Wet Splats Various CRT052303
- Hollywoodedge, Whistle Wbulb Horn CRT020801 (Mainly used for the "Guess Who?" puzzle segments in the earlier seasons.)
- Hollywoodedge, Whistling Wind Stead PE033301/Wind Cold Whistle BT022801
- Hollywoodedge, Wood Hits Debris Heav FS020702 (Heard once in "The Inventor's Spectacular Bridge".)
- Horror Increasing Violin Suspense 02 (Heard from seasons 19-24. Heard once in "Emily in the Middle" and "Thomas and the Royal Engine".)
- James Whistle (Used for James' whistle in a normal pitch.)
- Pro Sound Effects, Boomerang Swish, Lasso Like Patch Cord (Heard once in "Buckled Tracks and Bumpy Trucks" when the safari hat that Sir Topham Hatt had got flies back inside his car after he had just thrown it out the window.)
- Pro Sound Effects, Guinea Pig, Shrill Squeaks and Chatter, Various Versions 01/Sound Ideas, GUINEA PIG - SQUEALING, ANIMAL, RODENT (Heard twice in "The Big Freeze".)
- Pro Sound Effects, Seagulls and Crows, Birdcalls, Squawks, Screeches, Cries, CU
- Pro Sound Effects, Siren Sounded 3 Times, Train Stationary (Second half used for Paxton's horn in a normal pitch and Sidney's and modified and used for Daisy in a high pitch.)
- Pro Sound Effects, Steam Train, Depart from Station, Onboard, Exterior, Rhythmic Chugging Engine, Whistle Blasts, Clattering, Rumble (Whistle element only; used as Sam's whistle and Peter Sam's whistle in "The Great Little Railway Show".)
- ProjectSAM, Bon Rip 01 (Heard from seasons 17-24. Heard once in "Not So Slow Coaches", "Henry Spots Trouble", "Three Steam Engines Gruff" and twice in "Mucking About".)
- ProjectSAM, Bon Rip 02 (Heard from seasons 17-24. Heard once in "Old Reliable Edward".)
- ProjectSAM, Bon Rip 03 (Heard from seasons 17-24. Heard once in "Toad's Bright Idea", "Blown Away" and "All in Vain" right when James says "A scratch?!".)
- SKYWALKER, METAL - RAPID, SQUEAKY RATTLE (Can be heard being used as sweeteners for impacts and crashes in the earlier seasons.)
- SKYWALKER, METAL - SHORT HARSH SQUEAL (Is sometimes used when Kevin stops.)
- SKYWALKER, METAL - SHORT, LOW-PITCHED AND REVERBERANT GROAN (Heard twice in "Chucklesome Trucks" when James crashes into the tar tankers.)
- SKYWALKER, METAL - THOMAS' TRUCKS CLANGED AND SHUNTED
- SoundDogs, Metal, Rip, Crush, Drop, Flex/Sound Ideas, METAL, HIT - SHARP RIPPING CRUNCH 07 (Heard once in "Creaky Cranky" when Cranky's arm snaps after trying to lift up Thomas.)
- SoundDogs, Metal, Rip, Crush, Hit, Glass/Sound Ideas, METAL, HIT - METAL IMPACT: SHARP RIPPING CRUNCH 02 (Can be heard being used for impacts in the earlier seasons.)
- SoundDogs, Metal: Metal - Scrape Rubbing Screw - Metal Strain - CU - Large, Various Movements, Creaks & Bangs 01 (Heard once in "Bust My Buffers!".)
- SoundDogs, Train: Trains - Freight Cars Coupling Impact - MCU - Bg Engine Noise, Also Rattles, Clunks, Squeaks, & Creaks, All Coupling Related, Several Ambiance Changes (4th impact only; used for when steam engines stop, or when they start to move in the earlier seasons.)
- SoundDogs, Trains, Steam Train, Steam Train Idle Chuffs (3rd hiss only.)
- Sound Ideas, ANIMAL, DINOSAUR - SINGLE ROAR (Heard once in "Runaway Engine".)
- Sound Ideas, ANIMAL, MONKEY - VARIOUS SCREAMS, APE (Heard in "Thomas and the Monkey Palace".)
- Sound Ideas, ANIMAL, MOO - OUT IN LEFT FIELD: BOVINE INTERVENTION/COW - SINGLE MOO, ANIMAL 02 (Heard in "Two Wheels Good", "The Truth About Toby", and "Three Steam Engines Gruff".)
- Sound Ideas, ANVIL - SINGLE HIT ON ANVIL WITH HAMMER, METAL 02
- Sound Ideas, APPLAUSE, CHEERING - INDOOR: SMALL STUDIO AUDIENCE, HEAVY, CROWD 01 (Heard once in "Over the Hill".)
- Sound Ideas, APPLAUSE, CHEERING, CROWD - SMALL STUDIO AUDIENCE: APPLAUSE AND BIG CHEER 01 (Heard once in "The Big Freeze".)
- Sound Ideas, AUTO, SKID - BRAKE SKID, TIRE 01 (Heard in "Slippy Sodor".)
- Sound Ideas, AUTO, SKID - BRAKE SKID, TIRE 04 (Heard in "Mucking About".)
- Sound Ideas, AUTO, SKID - BRAKE SKID, TIRE 05 (Heard in "Slippy Sodor".)
- Sound Ideas, AUTO, SKID - CAR, BRAKING SKID 03 (Heard in "Slippy Sodor".)
- Sound Ideas, BALLOON - BALLOON AIR SQUEAK, 04 (Heard once in "Up, Up and Away!")
- Sound Ideas, BALLOON - BALLOON AIR SQUEAK, 05 (Heard once in "Up, Up and Away!")
- Sound Ideas, BIRD, CROW - COMMON CROW: CALLS, ANIMAL (Heard in "Three Steam Engines Gruff", "Forever and Ever" and "Diesel Do Right".)
- Sound Ideas, BIRD, DUCKS - MALLARD: TWO DUCKS CALLING, ANIMAL (Heard once in "Unscheduled Stops" and "Rangers of the Rails".)
- Sound Ideas, BIRD, LOON - COMMON LOON: SINGLE CALL, ANIMAL 01 (Heard once in "Henry in the Dark".)
- Sound Ideas, BIRD, LOON - SINGLE LOON: WARBLE CALLS, ANIMAL 01 (Lower pitched; can be heard in "Henry in the Dark,".)
- Sound Ideas, BIRD, OWL - CALLING, ANIMAL 02 (Heard in "No Snow for Thomas," "Helping Hiro" and "Three Steam Engines Gruff".)
- Sound Ideas, BIRD, TAWNY OWL - TAWNY OWL, STRIX ALUCO, BIRD, DIGIFFECTS (Heard thrice in "The Phantom Express.", and once in "A Shed for Edward".)
- Sound Ideas, BLINK, CARTOON - XYLO EYE BLINKS (Heard once in "Lost Property".)
- Sound Ideas, BOAT, PADDLE WHEEL - PADDLE WHEEL RIVER BOAT: STEAM POWERED: ON BOARD: STEAM WHISTLE: TWO SHORT BLASTS, HORN (Used as Luke's whistle in a normal pitch, and Rheneas, Raul and Gina's whistles in high pitches.)
- Sound Ideas, BOAT, STEAM - SMALL PASSENGER STEAM BOAT: ON BOARD: STEAM WHISTLE: ONE LONG AND TWO SHORT BLASTS 02 (Used as Shane's and Nia's whistles in higher pitches and speeds.)
- Sound Ideas, BOING, CARTOON - GOOD SPRONG 02
- Sound Ideas, BOING, CARTOON - METAL WOBBLE BOING 02 (Heard once in "Confusion Without Delay".)
- Sound Ideas, BOING, CARTOON - THIN WOOD BOING (Heard once in "Confusion Without Delay".)
- Sound Ideas, BOINK, CARTOON - BOINK 01 (Heard once in "Thomas and the Royal Engine".)
- Sound Ideas, BOINK, CARTOON - DOINK 01 (Heard once in "Runaway Truck".)
- Sound Ideas, CARTOON, BELL - SMALL BELL CHIME, SINGLE HIT, MUSIC, PERCUSSION, IDEA, ACCENT 02 (Heard once in "Henry Gets the Express")
- Sound Ideas, CARTOON, HORN - BOAT HORN (Used as Iron Bert's horn in a high pitch and Iron 'Arry's horn in an even higher pitch.)
- Sound Ideas, CARTOON, HORN - PARTY HORN, TWO TOOTS 01 (2nd toot; heard once in "Away from the Sea".)
- Sound Ideas, CARTOON, TWANG - WOBBLING TWANG (Heard twice in "Rosie is Red" and once in "Dowager Hatt's Busy Day".)
- Sound Ideas, CARTOON, WHISTLE - FALL WHISTLE, MEDIUM 01
- Sound Ideas, CARTOON, WHISTLE - FALLING, 4 VERSIONS, DIGIFFECTS (Heard once in "Mike's Whistle".)
- Sound Ideas, CARTOON, WHISTLE - TRAIN WHISTLE, LOW (Sometimes heard in the background at Knapford Station during Seasons 13-16 in a very low volume.)
- Sound Ideas, CARTOON, ZIP - HIGH 01 (Heard once in "Gordon Gets the Giggles".)
- Sound Ideas, CAT - DOMESTIC: SINGLE MEOW, ANIMAL 02 (Heard once in "Rosie is Red".)
- Sound Ideas, CAT - DOMESTIC: SINGLE MEOW, ANIMAL 04 (Heard once in "Rosie is Red".)
- Sound Ideas, CHEERING, CROWD - OUTDOOR: SMALL GROUP, AUDIENCE (Heard once in "Runaway Engine".)
- Sound Ideas, CHILDREN, CROWD - SMALL STUDIO AUDIENCE OF CHILDREN: RELIEVED 'AAHH', REACTION 01
- Sound Ideas, Comedy - Squeaky Toy 02 (Heard once in "P.A. Problems".)
- Sound Ideas, COUNTRY, DAY - BIRDS, CRICKETS, STEADY BREEZE, AMBIENCE (Heard in "Percy's New Friends".)
- Sound Ideas, COUPLING - FREIGHT CARS COUPLING IMPACT, TRAIN (Low volume; heard once in "Time for a Story" when Thomas and Emily finish shunting trucks at Knapford Yards.)
- Sound Ideas, COW - COW, HEIFER MOOING, ANIMAL, DIGIFFECTS
- Sound Ideas, COW - SINGLE MOO, ANIMAL 01 (Heard once in "Ace's Brave Jump".)
- Sound Ideas, CREAK, CART WHEELS - SQUEAKING (Heard once in a low pitch in "Cautious Connor".)
- Sound Ideas, DOG, SHEPHERD - LARGE DOG: BARKING IN KENNEL, ANIMAL 01 (Heard once in "The Way She Does It".)
- Sound Ideas, DOOR, WOOD - OPEN 02
- Sound Ideas, ELEPHANT - ELEPHANT TRUMPET, ANIMAL 01
- Sound Ideas, FIREWORKS - SEQUENCE OF FIREWORKS, EXPLOSION (Heard in "Sodor Surprise Day".)
- Sound Ideas, FIREWORKS - SINGLE BOTTLE ROCKET: WHISTLE 01 (Heard multiple times in "Sodor Surprise Day".)
- Sound Ideas, FIREWORKS - SINGLE BOTTLE ROCKET: WHISTLE AND EXPLODE 03 (Heard multiple times in "Sodor Surprise Day".)
- Sound Ideas, GATE, METAL - IRON GATE: SWINGING HINGE SQUEAK 02 (Heard once in "The Fastest Red Engine on Sodor".)
- Sound Ideas, HIT, CARTOON - HOLLOW METALLIC HEAD KONK 02 (Heard once in "Rosie is Red".)
- Sound Ideas, HIT, CARTOON - HOLLOW METALLIC HEAD KONK AND HORN (Heard once in "Rosie is Red".)
- Sound Ideas, HIT, CARTOON - ZIP AND HEAVY THUMP (Heard once in "Trusty Trunky".)
- Sound Ideas, HIT, METAL - ANVIL FALL ON HEAD, CARTOON 01 (Heard once in "The Fastest Red Engine on Sodor".)
- Sound Ideas, HORN, BICYCLE - BULB HORN: SINGLE HONK, TOY (Heard once in "Gordon Gets the Giggles".)
- Sound Ideas, HORROR - 'INSIDES' SPLAT, HUMAN 01 (Heard once in "Kevin the Steamie" and "Steam Team to the Rescue".)
- Sound Ideas, INDUSTRY, HYDRAULIC - ELECTRIC HYDRAULIC MACHINE: UP FULL, FACTORY (Normal and higher pitches; can be heard in "P.A. Problems".)
- Sound Ideas, LEVERS - LEVER, LARGE: RAILROAD COUPLER LIFT BAR, SINGLE THROW, SLACK, CLOSE, OPEN, THEN OPEN, THEN CLOSE
- Sound Ideas, METAL, DROP - METAL, DROP METAL POLE: LOUD DROP AND BOUNCE 02 (An edited variant is heard once in "Playtime".)
- Sound Ideas, METAL, DROP - METAL, DROP METAL POLE: LOUD DROP AND BOUNCE, 4 TAKES (The 1st clang is heard once in "Playtime" when Kevin drops an engine part off-screen after Victor says "It is an honor to have you visit our Steamworks.".)
- Sound Ideas, METAL, JOLT - METAL, JOLT - LARGE, LOW METAL JOLT, FOLEY (Often used when engines stop.)
- Sound Ideas, METAL, SCRAPE - SHORT, METAL SCRAPE SPRAYING SPARKS 01 (Used for the sparks that emit from the engine's wheels when they're braking.)
- Sound Ideas, METAL, SCRAPE - VARIOUS METAL SCRAPES SPRAYING SPARKS
- Sound Ideas, METAL, SQUEAK - METAL STRESS 02
- Sound Ideas, METAL, SQUEAK - METAL STRESS 04
- Sound Ideas, METAL, SQUEAL - METAL DRAGGING ON METAL (Heard once in "Duncan the Humbug".)
- Sound Ideas, PROJECTOR, FILM - 16 MM PROJECTOR: START, RUN, STOP, MOVIE (Heard once in "Duck and the Slip Coaches" and "Thomas Goes to Bollywood".)
- Sound Ideas, RECORD, SCRATCH - NEEDLE SCRATCHING RECORD, STEREO, TURNTABLE 04
- Sound Ideas, RICOCHET - BOW STRING RICCO (Heard once in "The Other Big Engine".)
- Sound Ideas, ROCKS, LANDSLIDE - SHORT, LONG, BOULDER & MIXED, AVALANCHE
- Sound Ideas, SCREAM - MALE, LONG, HUMAN, HORROR 02
- Sound Ideas, SCREAM - MALE, SHORT, HUMAN, HORROR
- Sound Ideas, SCREAM - MALE, TERROR, HUMAN, HORROR
- Sound Ideas, SHIP, HORN - BLAST, MARINE, BOAT 02 (Heard once in "Slippy Sodor".)
- Sound Ideas, SPACE, WHOOSH - FAST WHOOSH BY, SCI FI 09 (Heard once in "The Big Freeze".)
- Sound Ideas, SPACE, WHOOSH - FAST WHOOSH BY, SCI FI 11 (Heard once in "The Big Freeze".)
- Sound Ideas, SQUEAK, BRAKES - SQUEAKY BRAKES, SQUEALING
- Sound Ideas, SQUEAK, METAL - LARGE METAL OBJECT ROLLING, SCI FI (Can be heard in various episodes from the earlier seasons, for the engines brakes squeaking/squealing.)
- Sound Ideas, SQUEAK, METAL - SINGLE SHORT SQUEAK 01 (Heard twice in a slightly lower volume in "Bradford the Brake Van" when the brakeman onboard Bradford turns his handbrake.)
- Sound Ideas, SQUIRREL - CHATTERING, ANIMAL, RODENT (H-B) (Heard twice in "Percy's New Friends".)
- Sound Ideas, SQUISH, MUD - SINGLE MUD BUBBLE SQUISH 02 (Heard twice in "Away from the Sea".)
- Sound Ideas, STEAM - HEAVY STEAM RELEASE
- Sound Ideas, STEREO, TURNTABLE - NEEDLE SCRATCHING RECORD, RECORD PLAYER 02 (Heard once in "Number One Engine", "Thomas Goes to Bollywood", and "World of Tomorrow".)
- Sound Ideas, SUSPENSE ACCENTS - ORCHESTRAL SUSPENSE CLIMAX ACCENT (Heard once in "James the Super Engine".)
- Sound Ideas, TANK, MILITARY - TANK, MILITARY HATCH: OPEN OR CLOSE CLANK 01 (Heard once in "Henry's Magic Box".)
- Sound Ideas, TEETH, CARTOON - SCOOBY'S TEETH CHATTER, LONG/SHORT (Heard once in "Forever and Ever".)
- Sound Ideas, THUMP, CARTOON - TUBE THUNK 01 (Heard once in "The Big Freeze".)
- Sound Ideas, THUNDER - THUNDER CLAP AND RUMBLE, WEATHER 01 (Series 6000) (Heard once in "Three Steam Engines Gruff" and "The Railcar and the Coaches".)
- Sound Ideas, TRACTOR, STEAM - STEAM WHISTLE, LONG (Used as Rebecca's whistle in a high pitch.)
- Sound Ideas, TRACTOR, STEAM - STEAM WHISTLE, SHORT (Used as Sir Handel's whistle in a normal pitch, and Bert's, Rex's, and Rebecca's whistle in a higher pitch.)
- Sound Ideas, TRAIN, CROSSING BELL - RAILROAD CROSSING BELL: RINGING 02 (Heard once in "Cautious Connor," and "Hugo and the Airship," and many more.)
- Sound Ideas, TRAIN, DIESEL - DIESEL LOCOMOTIVE ENGINE: IDLE AT DIFFERENT SPEEDS
- Sound Ideas, TRAIN, DIESEL - DIESEL LOCOMOTIVE ENGINE: START UP, IDLE WITH REVS, SHUT OFF WITH LONG WIND DOWN
- Sound Ideas, TRAIN, FREIGHT - FREIGHT TRAIN: PASS BY WITH HORN DOPPLER, RAILROAD CROSSING SIGNAL BELL (Heard once in "Thomas and the Dragon" when a lime diesel engine passes in front of Thomas and Yong Bao.)
- Sound Ideas, TRAIN, FREIGHT - PASS BY, RUMBLE, SQUEAKY WHEELS (Is used in a higher pitch for rolling stock wheels squeaking.)
- Sound Ideas, TRAIN, HORN - DIESEL LOCOMOTIVE ENGINE: SOUND HORN, LONG (Used for Mavis' horn in a normal pitch and modified and used for Stafford in a high pitch.)
- Sound Ideas, TRAIN, PASSENGER - EXTERNAL: APPROACH, PASS BY LEFT TO RIGHT, FAST SPEED
- Sound Ideas, TRAIN, PASSENGER - EXTERNAL: APPROACH, PASS BY LEFT TO RIGHT, VERY FAST
- Sound Ideas, TRAIN, RAILYARD - RAILYARD AMBIENCE: CARS BEING SHUNTED, WHEELS SQUEALING, SOME SLIGHT DISTORTION (Is sometimes used as a background ambience in the earlier seasons.)
- Sound Ideas, TRAIN, RAILYARD - TRAIN, SWITCHYARD, CARS BEING COUPLED, METAL CRASH, VERSION 2, DIGIFFECTS
- Sound Ideas, TRAIN, STEAM - CHUG UP FROM DISTANCE, STOP, BRAKE SQUEAKS (2nd squealing section only; heard often in the early CGI seasons; used often for steam engines starting and stopping.)
- Sound Ideas, TRAIN, STEAM - ENGINE WHISTLE (GWR) 01 (Used as Spencer's whistle.)
- Sound Ideas, TRAIN, STEAM - ENGINE WHISTLE (GWR) 02 (Used as Spencer's whistle.)
- Sound Ideas, TRAIN, STEAM - ENGLISH STEAM LOCOMOTIVE WHISTLE: SEVERAL TOOTS (Used as Charlie's whistle in a normal pitch, and Gator's whistle in a lower pitch.)
- Sound Ideas, TRAIN, STEAM - SIGNAL FALLS (Can be heard being mixed with Hollywoodedge, Hammer Hitting An Anv TE037904/SoundDogs, Impacts & Crashes Metal - Anvil Hits - Metal Anvil Hits 05 when signals turn from red to green and when points are changed.)
- Sound Ideas, TRAIN, STEAM - STEAM TRAIN, 1950, ARRIVING TO STATION, BRAKES GRIND, DIGIFFECTS (The last half is used as one of the brakes squeaking/squealing sounds in the earlier CGI seasons.)
- Sound Ideas, TRAIN, STEAM - STEAM TRAIN: BRAKING TO STOP, HEAVY BRAKE SQUEAL
- Sound Ideas, TRAIN, STEAM - STEAM TRAIN: IDLE, LOUD STEAM RELEASE CHUGS
- Sound Ideas, TRAIN, STEAM - STEAM TRAIN, LOCOMOTIVE, BRAKES, STEAM, 3 VERSIONS, DIGIFFECTS (The last half from the 2nd take can be heard multiples times in episodes from the earlier seasons when steam engines start up or stop.)
- Sound Ideas, TRAIN, STEAM - STEAM TRAIN: WHISTLES, CLOSE UP (Used as Porter's whistle in a high pitch.)
- Sound Ideas, TRAIN, STEAM - WHISTLE, DISTANT, LONG BLAST 02
- Sound Ideas, TRAINS - STEAM TRAIN - WHISTLE 01 (Used as Belle's whistle in a very low pitch, and Millie's whistle in its normal pitch.)
- Sound Ideas, TRUCK, HORN - HORN 2 BLASTS (Used as Butch's horn in a normal pitch and Noor Jehan's horn in a low pitch.)
- Sound Ideas, TRUCK, HORN, AIR - TWO BLASTS 01 (Used as Salty's horn.)
- Sound Ideas, TRUCK, HORN, AIR - TWO BLASTS 02 (Used as Salty's horn.)
- Sound Ideas, TWANG, CARTOON - SAW BLADE TWANG 02 (Heard once in "Springtime for Diesel".)
- Sound Ideas, WHINE, CARTOON - SHELL SCREAMING WHINE DOWN
- Sound Ideas, WHISTLE, FACTORY - STEAM WHISTLE: ONE BLAST, INDUSTRY 01 (Used as Ryan's whistle.)
- Sound Ideas, WHISTLE, STEAM - 3.5 IN MILL STEAM WHISTLE: SINGLE SHORT BLAST; WHISTLES, COMIC NOISEMAKERS, MISCELLANEOUS INDUSTRY, MACHINERY & TOOLS (Used as Thomas' whistle in a high pitch during the musical number of "The Journey Never Ends".)
- Sound Ideas, ZIP, CARTOON - BIG WHISTLE ZING OUT (Heard once in "Cranky at the End of the Line", "Unscheduled Stops", "Daisy's Perfect Christmas", "Confused Coaches" and "Free the Roads".)
- Sound Ideas, ZIP, CARTOON - QUICK FIDDLE ZIP UP, HIGH (Heard once in "Confused Coaches".)
- Sound Ideas, ZIP, CARTOON - QUICK WHISTLE ZIP OUT (Heard once in "Rosie is Red".)
- Sound Ideas, ZIP, CARTOON - QUICK WHISTLE ZIP OUT, HIGH (Heard thrice in "The Big Freeze" and once in "World of Tomorrow".)
- Thomas Whistle (Used as Thomas' whistle in a normal pitch, Bill, Ben's, Rosie's and Timothy's in in a high pitch.)
- Unknown Crowd Cheering and Whooping Sound
- Unknown Sound Effects Library, Drawbridge Winch Clanking (Mainly used for when turntables are rotating.)
- Unknown Sound Effects Library, Old Car Horn (Used as Winston's horn.)
- Unknown Sound Effects Library, Orchestral Suspense Accent Stab 04 (Heard once in "Henry Spots Trouble".)
- Unknown Sound Effects Library, Orchestral Suspense Accent Stab 06 (Heard once in "Henry Spots Trouble".)
- Unknown Sound Effects Library, Train Horn 17 (Used as Den's horn.)
- Unknown Sound Effects Library, Train Whistle 11 (Only the 1st variant is used in a higher pitch as Skarloey's whistle.)
- Unknown Sound Effects Library, Train Whistle 16 (Used as Yong Bao's whistle.)
- Unknown Sound Effects Library, Train Whistle 24 (Used as Duncan's whistle.)
- Unknown Sound Effects Library, Train Whistle 25 (Used as Peter Sam's whistle.)
- Unknown Sound Effects Library, Train Whistle 26 (Used as Victor's whistle.)
- Unknown Sound Effects Library, Train Whistle 29 (Used as Stephen's whistle in a normal pitch, Emily and Hong Mei's in a high pitch, and Donald and Douglas' modified in a low pitch.)
- WB, HIT, METAL - HIGH BONK ON HEAD WITH METAL PIPE, CARTOON