Film

No.	Year	Title	Role	Vote Average
1	1968	The Touchables	Nigel Bent	35
2	1968	Joanna		54
3	1970	The Breaking of Bumbo	Crutcher	20
4	1971	The Blood on Satan's Claw	Peter Edmonton	62
5	1975	Three for All	Harry Bingley	10
6	1976	The Incredible Sarah	Henri de Ligne	50
7	1977	Jabberwocky	The Prince	61
8	1977	The Uncanny	Michael (segment "London 1912")	59
9	1978	Liza	Panshin	0
10	1978	The Odd Job		59
11	1979	The Prisoner of Zenda		56
12	1980	The Fiendish Plot of Dr. Fu Manchu	Robert Townsend	47
13	1983	The Return of the Man from U.N.C.L.E.: The Fifteen Years Later Affair	Nigel Pennington-Smythe	58
14	1984	The Late Nancy Irving	Bob Appleyard	50
15	1988	Doctor Who: Remembrance of the Daleks	Group Captain Gilmore	93
16	1989	The Return of Sam McCloud	Simon Langton	60
17	1993	The Eligible Bachelor	Robert St. Simon	66
18	1996	The Preventers	Lord Timothy Belvoir St. Nash	0
19	1996	The Willows in Winter	Bishop	70
20	1997	The Opium War	Captain Charles Elliot	66
21	1997	The Untransmittable Lily Savage Show	Steed	0
22	1997	Forbidden Territory: Stanley's Search for Livingstone	John Kirk	60
23	1999	Pig Heart Boy	Professor Rae	0
24	2001	The Paranormal Peter Sellers	Self (Archive footage)	0
25	2001	Sword of Honour		61
26	2002	The Gathering Storm	Terence Philip	66
27	2008	Lady Godiva		10
28	2016	A Very British Deterrent	Harold MacMillan	0
29	2017	Viceroy's House	Archie Wavell	66
30	2017	Goodbye Christopher Robin	Zoo Director	70
31	2018	National Theatre Live: Allelujah!	Ambrose	0
32	2019	Martin's Close	Stanton	56
33	2020	Peter Sellers: A State of Comic Ecstasy	Self	80

Television

No.	Year	Title	Role	Vote Average
1	1961	The Mike Douglas Show	Self	54
2	1963	Doctor Who	Gilmore	79
3	1967	Man in a Suitcase		70
4	1971	Upstairs, Downstairs	James Bellamy	76
5	1972	The Regiment		10
6	1977	BBC2 Play of the Week	Panshin	70
7	1979	Agony	Laurence Lucas	65
8	1981	Six Fifty-Five Special	Self	0
9	1981	Kinvig		65
10	1982	Countdown		58
11	1983	Don't Wait Up		64
12	1984	Sherlock Holmes	Lord Robert St. Simon	81
13	1984	Hammer House of Mystery and Suspense	Bob Appleyard	64
14	1985	The New Alfred Hitchcock Presents	Arthur Hollister	72
15	1986	Casualty	Professor De Silva	61
16	1990	The Upper Hand	Geoffrey	70
17	1990	Cluedo	Mr. Chapman	64
18	1991	The Mixer	Sir Anthony Rose	0
19	1991	Paul Merton: The Series		40
20	1991	Pebble Mill	Self	31
21	1992	Heartbeat	Col Maltravers	71
22	1993	Kung Fu: The Legend Continues	Alan Carstairs	66
23	1993	Kung Fu: The Legend Continues		66
24	1994	Law and Disorder		60
25	1995	Agony Again		70
26	1996	Noel's Telly Years		0
27	1996	Dalziel & Pascoe		64
28	1996	Once a Thief		56
29	1997	Midsomer Murders	Guy Sandys	75
30	1998	A Respectable Trade	Lord Scott	60
31	1998	Killer Net	Mr Miller	57
32	1998	dinnerladies	Duke of Danby	74
33	1999	Bad Girls	Oliver Lilley	76
34	1999	Pig Heart Boy	Professor Rae	0
35	2002	Cutting It	Father Rafe	67
36	2002	Spooks	Francis Denham	77
37	2003	Blue Murder	Dr Donald Halliwell	67
38	2004	The Paul O'Grady Show		46
39	2007	Kingdom	Dr. Scott-Brown	71
40	2008	Sense and Sensibility	Henry Dashwood	76
41	2008	Merlin	Lord Godwyn	78
42	2009	Above Suspicion	Charles Wickenham	69
43	2009	The Queen		70
44	2011	Celebrity Antiques Road Trip	Self - Participant	50
45	2013	Father Brown	Jeremiah Moxley	75
46	2015	Galavant	Uncle Keith	73
47	2015	Poldark	Lord Justice Kenyon	78
48	2018	Shakespeare & Hathaway - Private Investigators	Sir Tim Forbes-Allen	72
49	2022	The Chelsea Detective	Maurice Swift	62