In 1808, with the support of local philanthropist and social reformer Sir Thomas Bernard the school moved to 82 Marylebone High Street, which is now the boutique store Rachel Riley.
Thomas Jefferson | George Bernard Shaw | Sir | Thomas Edison | Sir Walter Scott | Thomas | Thomas Hardy | Thomas Mann | Thomas Aquinas | 3rd Rock from the Sun | baronet | Clarence Thomas | Thomas Gainsborough | Baronet | Dylan Thomas | Thomas Pynchon | St. Thomas | Saint Thomas, U.S. Virgin Islands | Thomas Carlyle | Thomas the Tank Engine | Thomas Moore | Thomas Cromwell | Thomas Becket | Bernard of Clairvaux | Bernard Montgomery, 1st Viscount Montgomery of Alamein | Thomas the Apostle | Thomas Merton | Thomas Tallis | Thomas Paine | Sir Arthur Conan Doyle |
Other founding Governors included George Legge, 3rd Earl of Dartmouth as President, the Marquess of Stafford, Sir Francis Baring, 1st Baronet, William Holwell Carr, John Julius Angerstein, Sir Abraham Hume, 2nd Baronet, Sir Thomas Bernard, 3rd Baronet, and others.
His father, William Harcourt Isham Mackworth (1806—1872), a younger son of Sir Digby Mackworth, the 3rd Baronet, took the additional surname Dolben after he married Frances, the heiress of Sir John English Dolben, the 4th Baronet.
Much of its initial funding and the initial proposal for its founding were given by the Society for Bettering the Conditions and Improving the Comforts of the Poor, under the guidance of philanthropist Sir Thomas Bernard and American-born British scientist Sir Benjamin Thompson, Count Rumford.
Sir Thomas was also a Director and leading proponent of the Regent's Canal.