Name
- Peel, Robert, 2nd Baronet, Prime Minister, 1788-18501
- Pelham-Clinton, Henry Pelham, 4th Duke of Newcastle1
- Pennant, Richard, Baron Penrhyn1
- Perceval, Spencer, Prime Minister of the United Kingdom, 1762-18121
- Perry, Thomas, of Chadlington, county Oxfordshire1
- Pitt, George, 1st Baron Rivers of Stratfieldsaye 17761
- Pitt, John, of Gloucester; of Add MS 382131
- Pitt, William, Prime Minister, called 'the younger', 1759-18061
- Plescy, Hugh1
- Pope, Edmund1
- Portar, Fulk1
- Powell, John Allan, attorney, of Lincoln's Inn1
- Powell, Raphael, of Add MS 385791
- Pratt, John Jeffreys, 2nd Earl and 1st Marquess Camden, 1759-18401
- Pritchard, William, senior, of Hawkesbury1
- Proby, John Joshua, 1st Earl of Carysfort1
- Quayle, Thomas, Agent to the House of Keys, I of Man1
- Raby, Frances1
- Randall, Alexander, of London1
- Randall, Joan, of Hawkesbury1