Here's a list of actors from Season 1 of The Crown that I have seen on stage (Mostly London theatres)
This list is unfinished and may be modified from time to time
If you have your own list let me know and I will post a link here
Go to my The Crown - Season 1- Cast list used to make this list
01 - Queen Elizabeth II - Claire Foy - DNA/The Miracle — Cottesloe Theatre (2008)
02 - Philip, Duke of Edinburgh - Matt Smith - Swimming with Sharks — Vaudeville Theatre (2007)
03 - Princess Margaret - Vanessa Kirby - The Acid Test — Royal Court Theatre (2011)
04 - Queen Elizabeth the Queen Mother - Victoria Hamilton - As You Like It — Barbican Theatre (1996)
05 - King George VI - Jared Harris - Hamlet — Barbican Theatre (1989)
06 - Winston Churchill - John Lithgow - The Magistrate — Olivier Theatre (2012)
07 - Anthony Eden - Jeremy Northam - Hamlet — Olivier Theatre (1989)
08 - Tommy Lascelles - Pip Torrens - Stanley — Cottesloe Theatre (1996)
09 - David, Duke of Windsor - Alex Jennings - The Taming of the Shrew — Barbican Theatre (1988)
10 - Queen Mary - Eileen Atkins - Mountain Language — Lyttelton Theatre (1988)
11 - Clemmie Churchill - Harriet Walter - Three Birds Alighting on a Field — Royal Court (1991)
12 - Jock Colville - Nicholas Rowe - Hamlet — Hackney Empire (1995)
13 - Graham Sutherland - Stephen Dillane - Long Day's Journey Into Night — Lyttelton Theatre (1991)
14 - Peter Townsend - Ben Miles - Hamlet — Barbican Theatre (1989)
15 - Mike Parker - Daniel Ings - Frankenstein — Olivier Theatre (2011)
16 - Martin Charteris - Harry Hadden-Paton - Posh — Royal Court Theatre (2010)
17 - Bobo Macdonald - Lizzy McInnerny - Beside Herself — Royal Court (1990)
18 - Lord Salisbury - Clive Francis - Hedda Gabler — Hampstead Theatre (1988)
19 - Clement Attlee - Simon Chandler - The Clandestine Marriage — The Queens Theatre (1994)
20 - Collins - Jo Stone-Fewings - The Misanthrope — Young Vic (1996)
21 - Wallis Simpson - Lia Williams - King Lear — Royal Court (1993)
22 - Archbishop of Canterbury - Ronald Pickup - The Cherry Orchard — Aldwych Theatre (1989)
23 - Michael Adeane - Will Keen - Mary Stuart — Lyttelton Theatre (1996)
24 - Harry Crookshank - Nigel Cooke - Our Country's Good — Royal Court (1989)
25 - Bill Mattheson - Paul Thornley - Noises Off — Lyttelton Theatre (2000)
26 - Clarissa Eden - Anna Madeley - A Russian in the Woods — The Pit (2002)
27 - Page (Buckingham Palace) - Jonathan Newth - Hamlet — Barbican Theatre (1992)
28 - Porchey - Joseph Kloska - The Vertical Hour — Royal Court (2008)
29 - Lord Mountbatten - Greg Wise - Nabakov's Gloves — Hampstead Theatre (1998)
30 - Mary Charteris - Jo Herbert - Hello/Goodbye — Hampstead Theatre Downstairs (2013)
31 - Lord Chamberlain - Patrick Drury - Afore Night Come — Young Vic (2001)
32 - Page (Clarence House) - Thomas Padden - The Winter's Tale — Shakespeare's Globe (2005)
33 - Master of the Household - Michael Bertenshaw - Taking Care of Baby — Hampstead Theatre (2007)
34 - U.S. Department Aide - Ian Porter - August: Osage County — Lyttelton Theatre (2008)
35 - Equerry (Buckingham Palace) - James Hillier - Lulu — Almeida at Kings Cross (2001)
36 - Archbishop of York - John Woodvine - The Merchant of Venice — Lyric Hammersmith (1991)
37 - Rab Butler - Michael Culkin - Morphic Resonance — Donmar Warehouse (1999)
38 - Norman Hartnell - Richard Clifford - The Magistrate — Savoy Theatre (1997)
39 - Kathleen Sutherland - Amelia Bullmore - The Thickness of Skin — Royal Court Theatre Upstairs (1996)
40 - John F. Dulles - Garrick Hagon - After the Fall — Lyttelton Theatre (1990)
41 - Billy Wallace - Nick Hendrix - Eden End — Richmond Theatre (2011)
42 - Professor Hogg - Alan Williams - Crave — Royal Court Theatre Upstairs (1998)
43 - Doctor Weir - James Laurenson - After the Fall — Lyttelton Theatre (1990)
44 - Johnny Dalkeith - Josh Taylor - Each His Own Wilderness — Orange Tree Theatre (2015)
45 - Duke of Norfolk - Patrick Ryecart - See U Next Tuesday — Albery Theatre (2003)
46 - F.O. Aide - Andrew Bone - Othello — Barbican Theatre (1999)
47 - S.I.S. Controller - John Sackville - Othello — Barbican Theatre (1999)
48 - Newspaper Editor - Peter Wight - Hamlet — Barbican Theatre (1989)
49 - Commander Vyner - David Yelland - An Ideal Husband — Theatre Royal Haymarket (1996)
50 - Thurman - Anthony Flanagan - A Russian in the Woods — The Pit (2002)
51 - Marion Crawford (as Sarah Vickers) - Sara Vickers - Judgement Day — The Print Room (2011)
52 - Doctor - Jamie de Courcey - Plenty — Albery Theatre (1999)
53 - Imbert-Terry - John Standing - A Delicate Balance — Theatre Royal Haymarket (1997)
54 - Vice Provost Sir Henry Marten - Michael Cochrane - Nuremberg - War Crimes Trial — Tricycle Theatre (1996)
55 - Princess Margaret's Private Secretary - Ben Fox - Judgement Day — AlmeidaTheatre (2009)
56 - Messenger - Grant Gillespie - King Lear — The Old Vic (2003)
57 - Nurse - Rebecca Benson - Let The Right One In — Royal Court Theatre (2013)
58 - Radio Producer - Ryan Early - The Servant — Lyric Hammersmith (2001)
59 - Bishop of Durham - Tony Guilfoyle - The Government Inspector — Tricycle Theatre (1994)
60 - Cecil Beaton - Mark Tandy - Beside Herself — Royal Court (1990)
61 - Director (Met Office) - Stephen Chance - The Shallow End — Southwark Playhouse (2012)
62 - Journalist #1 - Thom Tuck - Three Sisters — The Large, Southwark Playhouse (2014)
63 - Baron Nahum - Julius D'Silva - Pedro the Great Pretender — Playhouse Theatre (2005)
64 - U.S.A.F. General - Todd Boyce - Hamlet — Young Vic (1999)
65 - Nancy Lewis - Clare Foster - Avenue Q — Noel Coward Theatre (2006)
66 - Ernst von Hannover - Daniel Betts - Skylight — Wyndhams Theatre (1996)
67 - Tony Longdon - Ed Stoppard - Saints Day — Orange Tree Theatre (2002)
68 - Page (Marlborough House) - James Woolley - Nuremberg - War Crimes Trial — Tricycle Theatre (1996)
69 - Cecil Mann, Crown Jeweller - John Surman - The Red Shoes — Lyric Hammersmith (2002)
70 - Australian Doctor - Mike Sengelow - Mountain Hotel and Audience — Orange Tree Theatre (2008)
71 - Duke of Windsor's Valet - Michael Shelford - Events While Guarding the Bofors Gun — Finborough Theatre (2012)
72 - Lord Moran - Nicholas Jones - Flight — Olivier Theatre (1998)
73 - Page (Rhodesia) - Robin Bowerman - Marat/Sade — Olivier Theatre (1997)
74 - Radio Announcer - Edmund Wiseman - Osama the hero — Hampstead Theatre (2005)
75 - Sandringham Gamekeeper - Peter Ellis - Hindle Wakes — Finborough Theatre (2012)
76 - Secretary - Josie Kidd - Glorious — Duchess Theatre (2006)
77 - Princess Andrew of Greece and Denmark - Rosalind Knight - The Illusion — The Old Vic (1990)
78 - Page (Sandringham) - Christopher Ravenscroft - Macbeth — Barbican Theatre (1993)
