Film

No.	Year	Title	Role	Vote Average
1	1957	The One That Got Away	Lieutenant - Kent	70
2	1958	The Steel Bayonet	Pte. Livingstone	54
3	1960	The Angry Silence	Pryce-Evans	71
4	1960	Man in the Moon	Rex	64
5	1964	Guns at Batasi	Schoolie	71
6	1968	Doctor Who: The Mind Robber	Gulliver	79
7	1969	Doctor Who: The War Games	First Time Lord	96
8	1969	On Her Majesty's Secret Service	Campbell	66
9	1971	Quest for Love	Telford	66
10	1971	Mr. Horatio Knibbles	Mr. Bunting	57
11	1972	Some Kind of Hero		0
12	1973	Doctor Who: Planet of the Daleks	Taron	70
13	1974	Gold	Dave Kowalski	57
14	1976	The Five Pound Orange	Nigel	0
15	1976	Shout at the Devil	Captain Joyce	60
16	1976	Beasts: The Dummy	Clyde Boyd	0
17	1976	Doctor Who: The Deadly Assassin	Chancellor Goth	85
18	1978	Brass Target	Shelley	55
19	1982	Inside the Third Reich	Fritz Todt	72
20	1982	Gandhi	General Edgar	76
21	1984	A Distant Scream	Doctor	90
22	1988	The Hound of the Baskervilles	Frankland	71
23	1991	Thatcher: The Final Days	Alan Clark	65
24	1995	Braveheart	Balliol	79
25	2008	Stone of Destiny	Archdeacon	65
26	2009	The Perfect Scenario: The End of Dreams		0
27	2024	Doctor Who: The War Games in Colour	First Time Lord (archive footage)	58

Television

No.	Year	Title	Role	Vote Average
1	1955	Dixon of Dock Green	John Harris	53
2	1960	Pathfinders to Mars	Professor Hawkins	50
3	1961	The Avengers	Fox	77
4	1961	The Avengers	Captain Smythe	77
5	1962	Out of This World		43
6	1962	Dr. Finlay's Casebook		60
7	1962	The Saint	Bill Bast	73
8	1963	Doctor Who	Chancellor Goth	79
9	1963	Doctor Who	Taron	79
10	1963	Doctor Who	A Stranger	79
11	1963	Doctor Who	Gulliver	79
12	1963	Doctor Who	First Time Lord	79
13	1966	Softly, Softly		50
14	1969	Department S	Captain Carter	49
15	1970	Ivanhoe	Black Knight	50
16	1970	Doomwatch	Steven Granger	60
17	1971	Elizabeth R	Sir Christopher Hatton	74
18	1971	The Persuaders!	Gunar Christianson	76
19	1974	Within These Walls		53
20	1976	Beasts	Clyde Boyd	70
21	1978	Enemy at the Door	Dr. Philip Martel	78
22	1979	Minder	Mr. Russel QC	68
23	1980	Lady Killers	Melford Stevenson, Q.C.	50
24	1980	Juliet Bravo	Jack Driscoll	58
25	1984	Sherlock Holmes	Frankland	81
26	1984	Hammer House of Mystery and Suspense	Doctor	64
27	1984	The Bill		67
28	1986	Casualty	Tom Baxter	61
29	1986	Casualty	Dr. Alex Upchurch	61
30	1986	Casualty	Gerald Lassiter	61
31	1989	Agatha Christie's Poirot	Harrington Pace	82
32	1992	Virtual Murder		65
33	1992	Between the Lines		56
34	2023	Tales of the Tardis	A Stranger / Gulliver	44