Name
- Peel, Robert, 2nd Baronet, Prime Minister, 1788-18501
- Peninsular and Oriental Steam Navigation Company, 1835-1
- Perthes and Besser, booksellers, 1814-1
- Petty-Fitzmaurice, Edmond George, alias Lord Edmond Fitzmaurice, Baron Fitzmaurice, politician and historian, 1846-19351
- Phillips, Harry, auctioneer, London, 1766-18391
- Phillips, Joseph, solicitor, of Chippenham, fl 1854-18621
- Philological Society, 1830-1
- Pickering, Basil Montagu, bookseller and publisher, 1836-18781
- Pittar, Richard W., barrister, b 18181
- Playfair, Lyon, 1st Baron Playfair, politician and chemist, 1818-18981
- Poole and Carpmael, patent agents, 1835-1
- Pouncy, John, photographer, 1818-18941
- Pretsch, Paul, photographer and inventor, 1808-18731
- Primrose, Catherine Lucy Wilhelmina, née Stanhope, wife of Archibald John Primrose, Lord Dalmeny, and (1854) of Harry George Powlett, 4th Duke of Cleveland, 1819-19011
- Pritchard, Andrew, microscopist, 1804-18821
- Périgord, Charles Maurice de Talleyrand-, Prince of Benevento, 1754-18381
- Rawlinson, Henry Creswicke, 1st Baronet, Assyriologist and diplomatist, 1810-18951
- Ray Society, 1844-1
- Reade, Joseph Bancroft, vicar of Stone, Buckinghamshire, microscopist and experimenter in photography, 1801-18701
- Reboul, Eugenio de, botanist, 1781-18511