See Castle Street East 1 to 15 & 11 Berners Street in London Addresses dataset
No 2 Castle St East / SunFire 1794 William Busby hatter 399 Strand (Cook gent) / Land Tax 1791-1800 Thomas Cook
Will PCC 13.2.1822 William Busby hatter of New Bond St proved by widow Elizabeth still owned this house in Castle St East