- Columbus Direct Travel Insurance
- Cycleplan
- Cartridge Save
- Chapelle
- Club Med
- Condor Ferries
- Crazy Clearance
- Costco
- Churchill Van Insurance
- Champneys
- CarDelMar
- Crabtree & Evelyn
- CBS Store
- Coolshop
- Chelsea Stadium Tours
- Cunard Cruises
- Capital Gardens
- CCL Computers Online
- Car Audio Direct
- Clean Your Car
- CameraWorld
- Canineconcepts.co.uk
- California Astrology Association
- Clifton Cameras
- County Golf
- Crafts U Love
- Cotton Patch
- Clothes 2 Order
- Creativevideo.co.uk
- Carrier Bag Shop
- Caketoppers.co.uk
- Criminal Damage
- Cartridge World
- Contact Lenses Express
- Cherry Red Records
- Culinary Concepts
- Crombie
- ChillBlast
- Coolrocks
- Costa Bingo
- Cupid.com
- Calgary Stampede
- Capital Hair & Beauty Ltd
- CarID
- Casamundo
- Case Luggage
- CellHut.com
- Century Supplements
- Charlies Direct
- Chatsworth House
- Chipotle: Gourmet Burritos and Tacos
- City Car Club
- Club La Costa
- Cornerstone
- Cornish Cottage Holidays
- CrossCountry
- Cyberswim
- Circle Line Sightseeing Cruises
- Cloud Nine Hair
- Corney & Barrow
- Cables UK
- Chisholm Hunter
- Creative
- Collar and Cuffs London
- Coblands
- Cytoplan
- ChristmasTime UK
- Catwalk Glamour
- Cook Food
- Certainly Wood
- Campo Retro
- Contabo
- Carseat Canopy
- Case City
- Contemporary Heaven
- Cornish Seal Sanctuary
- Clickstay
- Chocolate Trading Co
- Carphone Warehouse
- Charles Tyrwhitt Shirts