See Castle Street East 1 to 15 &c in London Addresses dataset
No 10 Castle St East (NE corner of Castle St East & Berners St) Land Tax 1784-1794 Philip Pignaud 1796-1798 Messrs Kingdon & Davis 1800-1805 Peter Kingdon / Harris's List 1790 Miss H-w-rd
See Castle Street East 1 to 15 &c in London Addresses database
No 9 Castle St East Land Tax 1784-1796 Jane Harforth / Morning Herald ad 5.6.1788 Mrs Harforth's, poulterer, No 9 Castle St, nr Berners St, Middlesex Hospital
See Castle Street East 1 to 15 &c in London Addresses dataset
No 2 Castle St East Land Tax 1791-1800 Thomas Cook / SunFire 1794 Cook gent
See Castle Street East 1 to 15 &c in London Addresses dataset
No 8 Castle St East Land Tax 1791-1826 Thomas Edmonds / Harris's list 1788 Miss Br-wn, 1789 Miss B-ks / No 7 Castle St East Land Tax 1797 Catherine Edmonds
See Castle Street East 1 to 15 &c in London Addresses dataset
No 8 Castle St East Land Tax 1784 Thomas Gibson / Harris's List 1788 Miss Br-wn 1789 Miss B-ks
See Castle Street East 1 to 15 &c in London Addresses dataset
No 7 Castle St East Land Tax 1784 George Catlan
George Catlin taylor of Frith St Soho voted Percy & Clinton 1774 / George Catlin tailor of Richmond Buildings Soho voted Lincoln & Rodney 1780 / George Catlin bach otp = 30.8.1799 St Marylebone by lic Frances Lee (or See?) sp otp / SunFire 1809 George Catlin gent 9 Carrington St (Shepherds Market Mayfair)
See Castle Street East 1 to 15 &c in London Addresses dataset
No 6 Castle St East Land Tax 1800-1802 Mary Mead / 12 Portman St Marylebone Land Tax 1796-1799 Mary Mead
Mary Mead sp = 10.9.1803 by lic St Marylebone Thomas Godley bach
See Castle Street East 1 to 15 &c in London Addresses dataset
No 5 Castle Street East Land Tax 1791-1796 Rasmus Kleboe
See Castle Street East 1 to 15 &c in London Addresses dataset
No 5 Castle St East Land Tax 1784 Charles Spragg / SunFire 1781 Charles Spragg gent, 5 Castle St, Newman St
The only Charles Spragg I found was a comedian (i.e. actor) who fathered an illegitimate child in Manchester, date not given but between 1773 and 1794. (Thomas Battye's Red Basil Book). Not in Highfill, Burnim & Langhans Dictionary of Actors etc.
See Castle Street East 1 to 15 &c in London Addresses dataset
No 6 Castle St East Land Tax 1797-1798 Mary Morgan / Sun Fire 1797 Mary Morgan 6 Castle St spinster