Film

No.	Year	Title	Role	Vote Average
1	1950	Paul Temple's Triumph	Inspector Crane	0
2	1959	Worm in the Bud	District Inspector	0
3	1961	Gorgo	Prof. Hendricks	54
4	1961	The Day of the Fox	Colonel Gregory	0
5	1961	The Rose Affair	O'Riorden	0
6	1964	Crooks in Cloisters	Father Septimus	54
7	1964	The Devil-Ship Pirates	Don Jose Margella	56
8	1964	The Gorgon	Coroner	63
9	1965	No Place Like Earth	Freeman	0
10	1965	The World of George Orwell: 1984	O'Brien	0
11	1968	Oliver!	Mr. Brownlow	70
12	1969	The Possessed	Stepan Verhovensky	0
13	1969	A Walk with Love and Death	Pierre of St. Jean	61
14	1969	Anne of the Thousand Days	Fisher	71
15	1970	The Prime Minister's Daughter	Mayland	0
16	1972	Doomwatch	Vicar	60
17	1973	Father Dear Father	Vicar	48
18	1973	Penny Gold	Blachford	57
19	1973	Yellow Dog	Dover	22
20	1973	Lost Hearts	Mr. Abney (as Joseph O'Connor)	57
21	1974	The Black Windmill	Sir Edward Julyan	62
22	1975	The Ghost of Adelphi Terrace	George Bernard Shaw	0
23	1978	The Copyist	Heinrich Schalleplatte	0
24	1978	Romeo and Juliet	Friar Laurence	74
25	1980	A Private Battle		0
26	1981	Othello	Lodovico	62
27	1981	John Diamond	Alfred Diamond	0
28	1982	The Dark Crystal	Narrator / Urskeks (voice)	71
29	1983	Henry VI Part 1	Duke of Exeter / Shepherd	75
30	1993	The Forbidden Quest	J.C. Sullivan	60
31	1994	Tom & Viv	Bishop of Oxford	61
32	1998	Elizabeth	Earl of Derby	72
33	1999	The Messenger: The Story of Joan of Arc	chief inquisitor	64
34	2001	Macbeth	King Duncan	66
35	2020	Crip Camp: A Disability Revolution	Self	72

Television

No.	Year	Title	Role	Vote Average
1	1965	Out of the Unknown	Freeman	70
2	1966	The Spies	Polini	0
3	1967	The Forsyte Saga	'Old Jolyon' Forsyte	82
4	1967	Sir Arthur Conan Doyle	James Campbell	0
5	1970	Manhunt	Von Gebhardt	65
6	1971	A Ghost Story for Christmas	Mr. Abney	75
7	1977	BBC2 Play of the Week	Heinrich Schalleplatte	70
8	1978	The BBC Television Shakespeare	Friar Laurence	60
9	1986	Casualty	George Polston	61
10	1991	Performance	Earl of Northumberland	60