- T3
- Tackle Direct
- Tahari ASL
- Tailor Brands
- Tal Depot
- Talever
- Talkspace
- Target
- Targus
- Tarte Cosmetics
- Tatcha
- Tax Relief
- Taymee
- TBDress
- Tea Drops
- Teabloom
- Teamgee
- TeaVivre
- Tech Trade
- Tech21
- TechSmith
- TechSmith
- Ted Baker UK
- Ted Baker US
- tee Villain
- TeeAmazing
- Teeth Night Guard
- Template Monster
- Temple Spa
- Tempur-Pedic
- Tenergy Power
- Tenorshare
- Terralec
- Terravision
- Teva
- Tezenis
- The Ayurveda Experience
- The Baby Gift Company
- The Battery Guys
- The Body Shop
- The British Belt Company
- The Chain Gang
- The Chess Store
- The Christmas Warehouse
- The Couture Club
- The Double FC
- The Fragrance Shop UK
- The Green Welly Stop
- The Hamper Emporium
- The Healthy Back Institute
- The House Nameplate Company
- The Hungry Jpeg
- The Hut