- Sefton Meadows Garden Centre
- Schoolblazer
- Sky Bingo
- Screwfix Ireland
- Sports Direct
- STB.co.uk
- South Western Railway
- Salon Services
- Sun Transfers
- Sihoo
- Stripe and Stare UK
- Sustainable Furniture
- Soft99
- Stashed Products UK
- Swimwear365
- Supplemented.co.uk
- Sport is good
- Sephora
- Sainsbury's Delivery Pass
- Secret Escapes
- Staysure Travel Insurance
- Start-rite Shoes
- SHEIN
- Studio
- Selfridges
- Swoon Editions
- SentryPC
- SLB
- Spin And Win
- Sky Vegas
- Screwfix
- Star-Registration US
- Sykes Cottages
- Sugarlips
- Saramonic USA
- Suttons
- Sunday Times Wine Club
- Slate Milk
- Sweaty Betty
- Sonos
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