| P P M Engineers Ltd | Material handling equipment supplier | 4 Briarcroft Rd | Daily 08:00–18:00 |
| Pack Of Cards | Greetings card shop | 55 Arundel Rd | Thu 10:00–17:00 |
| PAD landscapes | Landscape architect | Studio One, Old Steine | Mon–Fri 09:00–18:00 |
| Panserve | Information services | Runway East, 50 New England St | Daily Open 24 hours |
| Parish Church of the Holy Cross, Wooding Dean | Church of england church | Church of the Holy Cross, 2 Downsway | Daily 09:00–18:00 |
| Party Houses | Holiday home letting agency | 1 Elms Lea Ave | Mon–Fri 09:00–17:00 |
| Patcham Methodist Church | Methodist church | Ladies' Mile Rd | Sun 10:30–11:30 |
| Paterson Simons & Co (Africa) Ltd. | Industrial equipment supplier | 4, The Offices, 10 Fleet St | Fri 08:00–17:00 |
| Paxton+Glew Contemporary Art Gallery | Art gallery | 12 Hanningtons Ln | Mon–Wed 11:00–17:00 |
| Pen To Paper | Papelería | 4 Sydney St | Thu 10:00–18:00 |
| Petit Pois Restaurant | French restaurant | 70 Ship St | Mon 12:00–15:00, 18:00–21:00 |
| PGA Branding | Web designer | Tower Point, 44 North Rd | Mon–Fri 09:00–18:00 |
| Phase Photography | Photography studio | East 1GA, 11A Station Road | Tue 10:00–20:00 |
| Phoenix Eco Spa Brighton | Day spa | 46 Trafalgar St | Mon–Fri 10:00–19:00 |
| Picking Patch Brighton | Pumpkin patch | Manor Garden, Preston, Preston Rd | Daily 10:00–19:00 |
| Picture Restoration | Art restoration service | 10-14 Waterloo Pl | Wed 13:00–17:00 |
| Plumber On Call | Plumber | 206 Dyke Rd | Daily Open 24 hours |
| Pocha.Zip - Korean Table Bbq | Korean restaurant | 14 East St | Mon 12:00–22:00 |
| Pompoko | Japanese restaurant | 110 Church St | Daily 11:30–23:00 |
| Pondscape | Pond contractor | 132 Kipling Ave | Mon–Sat 09:00–18:30 |
| Portslade Day Nursery | Day care center | 221-223 Old Shoreham Rd | Mon–Fri 08:00–18:00 |
| Portslade MOT & Service Centre | MOT centre | 19-20 Basin Rd N | Mon 08:00–18:00 |
| Positive Exposure T-shirt printers Brighton | Screen printer | 16 Tichborne St | Mon–Sat 10:00–18:30 |
| Post Office Travel Money | Currency exchange service | 6 Lewes Rd | Mon–Fri 09:00–17:00 |
| Pottery Gagliano | Pottery shop | 16-30 Hollingdean Rd | Tue 10:00–21:00 |
| Powerleague (Manor Road Gym) | Netball club | The Manor Road Gym, 9 Manor Rd | Mon 18:00–21:00 |
| POWERPLANT Home Automation Ltd | Home automation company | 42 Station Rd | Mon–Fri 08:30–17:00 |
| PowerWatts Brighton | Indoor cycling | 3 Neptune Square | Mon–Fri 06:30–19:00 |
| Practice Plus Brighton Station Health Centre | Medical centre | Aspect House, 84-87 Queens Rd | Daily 08:00–20:00 |
| Preston Lawn Tennis Club | Sports club | Preston Drove | Daily 07:00–22:00 |