Name
- Lussac, Joseph Louis, chemist and physicist, 1778-18501
- MacGillivray, William, ornithologist and natural historian, 1796-18521
- MacHale, John, Roman Catholic Archbishop of Tuam and Irish nationalist, 1791-18811
- Massmann, Hans Ferdinand, philologist, 1797-18741
- Miller, William Allen, chemist, 1817-18701
- Mone, Franz Josef, historian, 1796-18711
- Moore, Thomas, poet, 1779-18521
- Murray, John, publishers, 1768-20131
- National Press Agency, fl 18861
- Neeld, Joseph, MP, 1789-18561
- Nicolaischen Buchandlung, Berlin, bookseller and publisher, 1713-1
- Norris, Edwin, linguist and Assyriologist, 1795-18721
- Peel River Land and Mineral Company Limited, fl 18801
- Peel, Robert, 2nd Baronet, Prime Minister, 1788-18501
- Peninsular and Oriental Steam Navigation Company, 1835-1
- Petty-Fitzmaurice, Edmond George, alias Lord Edmond Fitzmaurice, Baron Fitzmaurice, politician and historian, 1846-19351
- Philological Society, 1830-1
- Photographic Society of Scotland, 1856-18731
- Pickering, Basil Montagu, bookseller and publisher, 1836-18781
- Pouncy, John, photographer, 1818-18941