| Meon Valley Logs | Wood supplier | High St | Daily Open 24 hours |
| Mind Unwind | Wellness programme | Forester Rd | Mon 10:00–16:00 |
| Mini Town - Role Play & Cafe - Locks Heath | Indoor playground | 21 Centre Way | Mon–Fri 09:30–14:00 |
| N&C Tiles and Bathrooms Southampton | Tile shop | 4, Waterloo Industrial Estate, Unit 3 Flanders Rd | Mon–Fri 07:30–17:00 |
| New Forest Wildlife Park | Wildlife and safari park | Deerleap Ln | Daily 10:00–17:30 |
| New Sky Thai Massage | Massage parlor | 92 Howard Rd | Daily 10:00–20:30 |
| Nobacconists Bitterne | Vaporiser shop | 94 Spring Rd | Mon–Sat 09:00–18:00 |
| Oak & Olive | Deli | 23 The Marsh | Mon–Sat 08:00–17:00 |
| Oak Lodge Care Home - Bupa | Nursing home | 45 Freemantle Common Rd | Daily Open 24 hours |
| Oates & Flour | Cake shop | Reed Cl | Tue–Sun 09:00–17:00 |
| P P Catering and events | Caterer | Winsor Rd | Daily 08:00–21:00 |
| Papillon | Modern European restaurant | 61 Commercial Rd | Tue–Thu 11:30–23:30 |
| Paratha Box - Southampton | Pakistani restaurant | 102 Portswood Rd | Daily 09:00–22:00 |
| Peartree House Rehabilitation | Rehabilitation centre | Peartree House, 8A Peartree Ave | Daily Open 24 hours |
| Peter Cooper Volkswagen Hedge End Southampton | Volkswagen dealer | Flanders Rd | Mon–Fri 08:00–18:30 |
| Pickles Pets | Dog walker | 68 Copsewood Rd | Daily 08:00–18:00 |
| Plus Chauffeurs Limited | Chauffeur service | Suite 9, Oculis House, Eddystone Rd | Daily 07:00–21:00 |
| Princess Anne Hospital | Women's health clinic | Coxford Rd | Daily Open 24 hours |
| Prize Insulation Ltd | Insulation contractor | 80 Swanwick Ln | Daily 09:00–17:00 |
| ProPave Landscapes | Landscaper | 20 Claylands Rd | Mon–Fri 07:30–19:00 |
| Pure Rehearsal Studios | Equipment rental agency | 2 Endle St | Mon–Fri 08:00–00:00 |
| Queens Park - Southampton | State park | Orchard Pl | Daily Open 24 hours |
| RCCG Southampton, RCCG Oasis of Life | Church of christ | Oasis of Life Centre, 118-120 Lodge Rd | Mon 11:30–12:30 |
| Red chilli and flame | Halal restaurant | 113 St Mary's Rd | Daily 11:00–23:00 |
| Rena Health & Leisure Grand Harbour Dope | Health spa | W Quay Rd | Mon–Fri 06:30–22:00 |
| Rio's Piri Piri | Chicken restaurant | 243 Portswood Rd | Mon–Wed 12:00–23:00 |
| River Rat Hamble | Events venue | High St | Thu 10:00–15:00 |
| Room 13 Fitness | Physical fitness programme | 1 Pylewell Rd | Mon–Fri 09:00–21:00 |
| Royal Air Force Yacht Club | Yacht club | Riverside House, Rope Walk | Mon–Wed 09:00–21:00 |
| Royal Southern Yacht Club | Yacht club | Rope Walk | Mon–Tue 17:00–22:00 |