| Bamboo-Mat Stratford | Asian fusion restaurant | 21-24 Victory Parade | Daily 12:00–22:00 |
| Banning Dental Group - Lewisham | Dentist | 47 Loampit Vale | Mon 09:00–20:00 |
| Bar Beach Grill Restaurant Lewisham | Bar & grill | Lindsay Court, Loampit Vale | Mon–Thu 12:00–22:30 |
| Bar Brothers Events - Bar Hire and Catering | Mobile caterer | Bank Studios, 23 Park Royal Rd | Mon–Fri 09:00–21:00 |
| Barley flower studio | Flower designer | UNIT 6A, THE APPRENTICE SHOP, MERTON ABBEY MILLS, Watermill Wy | Tue 11:30–17:00 |
| Barnes Sports Club | Sports complex | The Club House, 261 Lonsdale Rd | Mon–Fri 10:00–23:00 |
| Barrafina Adelaide Street | Small plates restaurant | 10 Adelaide St | Mon–Tue 12:00–15:00, 17:00–21:30 |
| Base Lift Services Limited | Lift service | 167-169 Great Portland St | Daily Open 24 hours |
| Basilico Crouch End | Pizza delivery | 51 Park Rd | Mon–Thu 16:00–22:00 |
| Baspro Group Limited / Man with a Van Removals | Junk removal service | Pegasus Court | Daily Open 24 hours |
| Battersea Dogs and Cats Home | Animal shelter | 4 Battersea Park Rd | Daily 09:00–16:00 |
| Battersea Park Children's Zoo | Zoo | Battersea Park | Daily 10:00–17:30 |
| Battersea Park Millennium Arena | Padel court | Carriage Dr E | Mon–Fri 07:00–22:00 |
| Battersea Power Station | Historical landmark | Circus Rd W | Mon–Sat 10:00–20:00 |
| BeautyGene | Hair removal service | 8 Hebden Pl | Sun 11:00–19:00 |
| BeLeaf juice bar | Soft drinks shop | Unit Kiosk P, Floor, First 159, High Rd | Mon–Fri 10:00–18:00 |
| Belgique Wanstead Cafe | Belgian restaurant | 29 Cambridge Park | Daily 08:00–17:00 |
| Bellingham Exservicemens Club | Club | 10 Allerford Rd | Mon–Thu 13:00–23:00 |
| Bellingham Leisure & Lifestyle Centre | Indoor playground | 5 Randlesdown Rd | Mon–Fri 09:00–22:00 |
| Bench Bistro | Frühstückslokal | 229 Gray's Inn Rd | Tue–Thu 06:30–16:00 |
| Benchmark | Sportswear store | 129G Upper St | Mon–Tue 07:30–16:00 |
| Bengal Indian Cuisine | Indian restaurant | 153 Tottenham Ln | Mon–Tue 17:30–00:00 |
| Bentley's Oyster Bar & Grill | Oyster bar restaurant | 11-15 Swallow St, Piccadilly | Mon–Thu 12:00–23:00 |
| Berëzka London | Tienda de abarrotes rusa | 188 Finchley Rd | Mon–Sat 11:00–20:00 |
| Berkeley Square | Park | 45 Berkeley Square | Daily 10:00–19:30 |
| Berlin Döner Kebab | Doner kebab restaurant | 118 Wandsworth High St | Mon–Thu 12:00–01:00 |
| Bermondsey Bierkeller | German restaurant | 2, 4 Tooley St | Mon–Wed 12:00–23:00 |
| Berneliu Uzeiga London - Shepherds Inn London | Lithuanian restaurant | 16, Mary Rose Mall | Tue–Thu 12:00–22:00 |
| Bespoke Carpentry London | Carpenter | 27 Old Gloucester St | Daily 09:00–17:00 |
| Bespoke Goldsmith | Jewellery store | 117, The Record Hall, 16A Baldwin's Gardens | Daily 09:30–17:00 |