| Ashgrove House | Assisted living residence | Ashgrove House Nursing Home, 63 Station Rd | Daily 00:00–23:30 |
| Ashington House Surgery | Medical centre | Ashington House, Ashington Way | Mon–Fri 08:00–18:30 |
| Aspray Swindon & Gloucester | Building restoration service | Tadpole Garden Village, 7 William Morris Way | Daily Open 24 hours |
| At Last Weddings | Wedding planner | 13 Southbrook St | Daily 09:00–17:00 |
| ATBShop | Sporting goods shop | Westmead Industrial Estate, Unit 2, Glenmore Business Park, Southmead Close | Mon–Sat 10:00–17:30 |
| ATC Cleaning & Janitorial Supplies Ltd | Janitorial equipment supplier | Unit 1, Old Watson Site, Chelworth Industrial Estate, Braydon Ln | Mon–Fri 08:00–17:00 |
| Audi Swindon | Audi dealer | Delta Business Park, Welton Rd | Mon–Fri 08:30–18:00 |
| Aurielle Aesthetics | Cosmetics industry | 1 High St, Fairwater Ct | Thu–Fri 09:30–17:30 |
| Austen Dawson (Construction & Mechanical) Ltd | Construction company | 7a High St | Mon–Tue 09:00–17:00 |
| Auto Diagnostics & Servicing Ltd | MOT centre | 6 Bridgemead Cl | Mon–Fri 08:30–17:30 |
| Autoelectrix | Auto electrical service | Units 1 & 2, Axis Business Centre | Mon–Fri 08:00–17:00 |
| AWBS Ltd | Building materials supplier | Manor Garden Centre | Mon–Fri 07:30–17:00 |
| Awdry Law Solicitors - Swindon | Lawyer | 2, Gateway North, N Latham Rd | Thu–Fri 09:00–17:00 |
| Barbury Shooting School | Gunshop | Café | Country Store | Gun shop | Wroughton, Swindon SN4 0QH | Mon–Tue 09:00–16:30 |
| Bare Glazed Studio | Pottery classes | 124 Cricklade Rd | Tue–Wed 13:00–20:00 |
| Baristocats Coffee (Swindon) | Tea room | 115 Commercial Rd | Thu 07:30–15:00 |
| Barnmoor Close Sheltered Accommodation - Sanctuary Housing Association | Sheltered housing | Eastmere | Fri–Sat Open 24 hours |
| Basset Down Complex | Golf club | Basset Down Complex, Hay Ln | Mon–Tue 07:30–21:00 |
| Bassett Spice (Royal Wootton Bassett) | Indian takeaway | 21 High St | Daily 17:00–23:00 |
| Bath Road Methodist Church | Methodist church | Epworth Court, Bath Rd | Sun 09:30–12:00 |
| BBL Batteries (Swindon) | Battery shop | Unit 4, Westmead Industrial Estate, Bridgemead Cl | Mon–Fri 08:30–17:30 |
| Beard | Builder | Faraday Rd | Mon–Fri 08:00–17:00 |
| Beauty Spot | Beauty salon | 2C Havelock St | Mon–Sat 09:30–17:00 |
| Beesleys Tools | Tool shop | 1 Beatrice St | Mon–Fri 08:30–16:30 |
| Berkeley Farm Dairy | Dairy farm | Swindon Rd | Mon–Fri 09:00–17:00 |
| Best Food Supermarket | African goods shop | 52 Regent St | Daily 09:00–21:00 |
| Better Health With Wroughton Body Balance | Pilates studio | 8 Woodland View | Mon–Tue 08:30–20:30 |
| Betterclean Services Swindon & Wiltshire | Cleaners | Swatton Barn, Commonweal Rd | Mon–Fri 08:30–18:00 |
| BeU Swindon | Mental health services | Nexus Business Centre, 6 Darby Cl | Mon–Fri 08:00–18:00 |
| Bike Treads | Motorbike dealer | Kennedy Dr | Mon 08:30–18:00 |