| Record | Name | Role |
| ROLE119718 | Hawthorne; Sir; Nigel (1929-2001) | King George III |
| ROLE119719 | Dale; Janet | Queen Charlotte, wife of King George |
| ROLE119720 | Fitzgerald; Michael | The Prince of Wales, son of King George III |
| ROLE119721 | Lockyer; Mark | The Duke of York, son of King George III |
| ROLE119722 | Carey; Richenda | Lady Pembroke, lady-in waiting / Margaret Nicholson |
| ROLE119723 | Sampson; Nick | John Hoppner, a painter |
| ROLE119724 | Flynn; Daniel | Greville, equerry |
| ROLE119725 | Hinde; Jamie | Papandiek |
| ROLE119726 | Shelley; Brian | Fortnum, page |
| ROLE119727 | Corrigan; Paul | Braun, page |
| ROLE119728 | Wadham; Julian | William Pitt, the Prime Minister |
| ROLE119729 | Villiers; James | Lord Thurlow, the Lord Chancellor |
| ROLE119730 | Scott; Simon | Henry Dundas |
| ROLE119731 | Brown; Alan | Sir Selby Markham |
| ROLE119732 | Burnside; Mike | Sir Boothby Skrymshir |
| ROLE119733 | Kynman; Paul | Ramsden |
| ROLE119734 | Henry; David | Charles James Fox |
| ROLE119735 | Mitchell; Iain | Richard Brinsley Sheridan |
| ROLE119736 | Laird; Peter | Edmund Burke |
| ROLE119738 | Randall; Celestine | Mrs Armistead / Dr Ida MacAlpine / Maid |
| ROLE119739 | Byrne; Anthony | John Hoppner, a painter |
| ROLE119740 | Hammond; Roger | Sir George Baker |
| ROLE119741 | Swann; Robert | Dr Richard Warren |
| ROLE119742 | Shaps; Cyril | Sir Lucas Pepys |
| ROLE119743 | Kay; Charles | Dr Francis Willis |
| ROLE143750 | Calf; Anthony | Fitzroy, equerry |
| ROLE143751 | Davies; Matthew Lloyd | Papandiek, page |
| ROLE143752 | Pearson; Patrick | Henry Dundas |
| ROLE143753 | Innocent; Harold | Sir George Baker |
| ROLE143754 | Child; Jeremy | Dr Richard Warren |
| ROLE143755 | Sampson; Nick | Fitzroy, equerry |
| ROLE143756 | The Company | Footmen / Couriers / MPs / Dr Willis's assistants |
| Reference Number | Title | Date | Series |
| RNT/PP/1/2/171 | The Madness of George III | 19 July 1993 | Lyttelton Programmes |
| RNT/SM/1/350a | The Madness of George III | 1991 | Prompt Scripts |
| RNT/PP/2/6/139 | The Madness of George III | April 1992 | Other Venue Posters |
| RNT/PR/4/1/501 | The Madness of George III | April 1992 - August 1993 | Press Production Review Files |
| RNT/PP/2/2/124 | The Madness of George III | 28 November 1991 | Lyttelton Posters |
| RNT/PP/1/2/175 | The Madness of George III | 29 November 1993 | Lyttelton Programmes |
| RNT/PP/2/2/138 | The Madness of George III | 19 July 1993 | Lyttelton Posters |
| RNT/SM/1/350 | The Madness of George III | 1991 | Prompt Scripts |
| RNT/PP/2/6/143 | The Madness of George III | May 1992 | Other Venue Posters |
| RNT/PP/2/6/144 | The Madness of George III | May 1992 | Other Venue Posters |
| RNT/PP/1/2/150 | The Madness of George III | 28 November 1991 | Lyttelton Programmes |
| RNT/PP/5/245 | The Madness of George III | 1991-1993 | Rehearsal Photographs |
| RNT/PR/4/1/503 | The Madness of George III | December 1994 - January 1996 | Press Production Review Files |
| RNT/PR/3/374 | The Madness of George III | 1991-1993 | Rehearsal and Production Photographs |
| RNT/PP/1/2/172 | The Madness of George III | 19 July 1993 | Lyttelton Programmes |
| RNT/PR/4/1/502 | The Madness of George III | May 1992 - March 1994 | Press Production Review Files |
| RNT/PP/2/6/140 | The Madness of George III | April 1992 | Other Venue Posters |
| RNT/PP/2/6/145 | The Madness of George III | September 1992 | Other Venue Posters |
| RNT/PP/2/6/142 | The Madness of George III | May 1992 | Other Venue Posters |
| RNT/PP/1/2/151 | The Madness of George III | 28 November 1991 | Lyttelton Programmes |
| RNT/PP/1/2/149 | The Madness of George III | 28 November 1991 | Lyttelton Programmes |
| RNT/PR/4/3/58 | The Madness of George III | 11 September 1993 - 14 October 1993 | Press West End Transfer and Touring Review Files |
| RNT/PP/2/2/129 | The Madness of George III | 13 July 1992 | Lyttelton Posters |
| RNT/PO/2/1/75a | The Madness of George III | 1993 | Lyttelton Production Office Show Files |
| RNT/PO/2/1/75b | The Madness of George III | 1993 | Lyttelton Production Office Show Files |
| RNT/SM/2/3/101 | The Madness of George III | 1991 - 1994 | Lyttelton Show Reports |
| RNT/PR/2/3/106 | Sons of George III 'Weigh-In' at Berry Bros. & Rudd | 2 September 1993 | Press Releases 1990-1999 |
| RNT/PR/2/3/81 | New play by Allan Bennett for Lyttelton Premiere: 'The Madness of George III' | c.1991 | Press Releases 1990-1999 |
| RNT/R/1/2/7 | Badges, Magnets and Stickers | Undated, 1980- | Gifts |
| RNT/PR/4/1/500 | The Madness of George III | June 1991 - November 1992 | Press Production Review Files |
| RNT/PP/1/6/254 | The Madness of George III | 20 April 1992 | Touring programmes |
| RNT/PP/1/6/255 | The Madness of George III | 27 April 1992 | Touring programmes |
| RNT/PP/1/6/256 | The Madness of George III | 18 May 1992 | Touring programmes |
| RNT/PP/1/6/257 | The Madness of George III | 25 May 1992 | Touring programmes |
| RNT/PP/1/6/279 | The Madness of George III | 11 September 1993 | Touring programmes |
| RNT/PP/1/6/280 | The Madness of George III | 28 September 1993 | Touring programmes |
| RNT/PP/1/6/286 | The Madness of George III | 01 February 1994 | Touring programmes |
| RNT/PP/1/6/293 | The Madness of George III | 1994 | Touring programmes |
| RNT/PP/3/6/94 | The Madness of George III | 1991 | Touring Printwork |
| RNT/PP/3/9/3/76a | The Madness of George III | 1991 | Lyttelton Cast Lists |
| RNT/PP/3/9/3/76b | The Madness of George III | 1992 | Lyttelton Cast Lists |
| RNT/PP/3/9/3/76d | The Madness of George III | 1993 | Lyttelton Cast Lists |
| RNT/PP/3/9/3/76c | The Madness of George III | 1993 | Lyttelton Cast Lists |