Greenwich Business by letter: u
- U Boss, Greenwich
- UCI The Filmworks, Greenwich
- UK World Evangelism Trust, Greenwich
- Ultimate Pizza, Greenwich
- Ultra, Greenwich
- Ultrachem Ltd, Greenwich
- Under Fives Creche Project, Greenwich
- Uniband, Greenwich
- Unicaption Ltd, Greenwich
- Unigloves (UK) Ltd, Greenwich
- Unique Print Finishers Ltd, Greenwich
- Unique Service Centre, Greenwich
- Unique Technology Ltd, Greenwich
- Unit 9, Greenwich
- Unit Dry Cleaners, Greenwich
- United, Greenwich
- United Auto Spares, Greenwich
- United Marine Aggregates, Greenwich
- University Of Greenwich, Greenwich
- Unwins Wine Merchants, Greenwich
- Unwins Wine Merchants, Greenwich
- Up The Creek Comedy Empire, Greenwich
- Up The Creek Ltd, Greenwich
- Up Top Down Below, Greenwich
- Urasenke, Greenwich
- Urtopia, Greenwich
- Use Your Loaf, Greenwich