| ANNA Womens clothing shop in Primrose Hill | Ladies' clothes shop | 126 Regent's Park Rd | Mon–Sat 10:00–18:00 |
| Anna Ziskoven Osteopathy and Doula Services | Doula | 127 Mercers Rd, Lewes Rd | Mon–Fri 09:00–17:00 |
| Annab Brasserie | Libanonilainen ravintola | 803 Fulham Rd. | Mon–Thu 12:00–22:30 |
| Anthony Gregg Partnership - Executive Search Firm London | Executive search firm | Second Floor, 2 Allen St | Mon–Fri 09:00–18:00 |
| AntikBar - Original Vintage Posters | Tienda de pósteres | 404 King's Rd | Mon–Fri 10:00–18:00 |
| Antiques of Wimbledon | Antique shop | 329 Kingston Rd | Thu 09:00–18:00 |
| Antony Batty & Co - Insolvency Practitioners, London | Liquidator | Gray's Inn, 3 Field Court | Mon–Fri 09:00–17:30 |
| Ants HQ | Pet store | The Creighton Centre, 374-380 Lillie Rd | Mon–Fri 07:00–18:30 |
| Any Rubbish | General contractor | 243 Hither Green Ln | Daily Open 24 hours |
| AORTA UK LTD (Trading as TICKETSTOSEE) | Event ticket seller | Strand) Office, 7 Bell Yard | Mon–Fri 09:30–17:00 |
| apartment services limited | Short term apartment rental agency | 2 Sandwich St | Mon–Fri 10:00–17:00 |
| Apostolic Shalom Church, House Of Prayer | Apostolic church | St Paul's Way | Sun 14:00–17:00 |
| Apple Tree Childrens Cafe | Children's cafe | 27-29 Norwood Rd | Mon–Fri 09:15–10:45, 11:15–12:45, 13:15–14:45, 15:15–16:45 |
| Appleton & Sons Ltd | Cash and carry wholesaler | 17 Towcester Rd | Mon–Fri 05:30–15:00 |
| Apprenticeship Connect - Training & Apprenticeship Recruitment | Job centre | 25 Cabot Sq | Fri 09:00–13:30 |
| APT Renovation | Custom home builder | 7 Lavender Hill | Mon–Fri 08:00–17:00 |
| Aqua Steam Room Generators Ltd | Electric generator shop | Lombard Rd | Mon–Fri 08:45–17:00 |
| Aquacool | Water cooler supplier | Waterside Studios, 32 Waterman St | Tue 08:00–17:00 |
| Aquaheat | Plumber | 19 Terrapin Rd | Mon 07:00–21:00 |
| Aquari Aqua Care Ltd | Pond contractor | George Furness House, Grange Rd | Mon 08:00–19:00 |
| Aquatic Design Centre | Aquarium shop | 26 Zennor Rd | Mon–Tue 11:00–18:00 |
| Ar Aesthetics & Laser | Esthetics service | Rm 1, 91 Westminster Bridge Rd | Mon–Fri 10:00–20:00 |
| Arabian Hammam | Hammam | 441 Edgware Rd | Tue–Sun 11:00–19:30 |
| Aradhana | Saree shop | 211 Upper Tooting Rd | Mon 11:30–17:30 |
| Arch Golf | Indoor golf course | Railton Rd | Daily 07:00–23:00 |
| Archery for All | Archery club | 1212 London Rd | Tue 11:00–12:00 |
| Archis Site Services | Construction equipment supplier | 1 King's Ave | Mon–Fri 09:00–17:00 |
| Architectural Metalwork Services Ltd | Metal construction company | 42 Peckarmans Wood | Mon–Fri 08:00–18:00 |
| Architecture Social Club | Architectural designer | Phare Court, Architecture Social Club, Studio 30, Commercial Block C, The Trampery, 29 Rookwood Way | Mon–Fri 09:00–18:00 |
| Archway Leisure Centre | Swimming pool | 1 MacDonald Rd | Mon–Fri 06:30–21:30 |