Southwark Business by letter: u
- U K I C, Southwark
- U S Tax & Financial Services Ltd, Southwark
- U V Science, Southwark
- Ubiq Creative Training Ltd, Southwark
- UCI Cinemas, Southwark
- UFX Ltd, Southwark
- Uganda Aids Action Fund, Southwark
- Ujima Housing Association Ltd, Southwark
- UK 5 Organics, Southwark
- UK Detective, Southwark
- UK Detective, Southwark
- UK London Services, Southwark
- Ultimate Experience, Southwark
- Ultra DJ Management Ltd, Southwark
- Umar & Co, Southwark
- Umashiv News, Southwark
- Uncommon Blessing Travel Centre, Southwark
- Uncut, Southwark
- Underground BLC Ltd, Southwark
- Uni-Plan, Southwark
- Unifi, Southwark
- Union Car Parks, Southwark
- Union Car Parks, Southwark
- Union Car Parks Ltd, Southwark
- Union Gallery, Southwark
- Union Newsagent, Southwark
- Union Press Ltd, Southwark
- Unique Touch, Southwark
- Unique Travel, Southwark
- Unison Media Ltd, Southwark
- United Business Media, Southwark
- United Meats, Southwark
- United Networks, Southwark
- United St Saviours Charity, Southwark
- Unity Centre, Southwark
- Unity Estates UK Ltd, Southwark
- Universal Church Of The Kingdom Of God, Southwark
- Universal Parking, Southwark
- Universal Productions, Southwark
- Universal Tyre, Southwark
- Universal Tyre Ltd, Southwark
- Unwins, Southwark
- Unwins Ltd, Southwark
- Unwins Wine Merchants, Southwark
- Unwins Wine Merchants, Southwark
- Unwins Wine Merchants, Southwark
- Update Hair Design, Southwark
- Upfront Food & Wine, Southwark
- Upland Dry Cleaners, Southwark
- Upland Lodges Ltd, Southwark
- Uplands Tavern, Southwark
- Upper Cuts, Southwark
- Upstream Ltd, Southwark
- Upstream Rehearsal Rooms, Southwark
- Uptown Marketing Ltd, Southwark
- Urban Angels, Southwark
- Urban Context, Southwark
- Urban Salon Ltd, Southwark
- Urethane Technology, Southwark
- Urology Practice, Southwark
- Urvine, Southwark
- Utobeer Ltd, Southwark
- Utopia, Southwark
- Uvine.Com Ltd, Southwark
- Uxbridge Arms, Southwark