He also played Doctor Who companion Bernice Summerfield's father, Isaac Summerfield, in Death and the Daleks, and he guest starred in the Big Finish Productions Doctor Who audio drama Excelis Decays.
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Later he became the second actor to portray the villain Omega (the first being Stephen Thorne): Collier portrayed Omega in the Fifth Doctor serial Arc of Infinity and later in the Big Finish Productions audio drama Omega.
Ian Fleming | Ian McKellen | Collier's Weekly | Ian Smith | Ian Rankin | Ian Brown | Ian Botham | Ian Thorpe | Collier's | Ian McEwan | Ian Paisley | Ian Kershaw | Ian Bremmer | Ian Roberts | Ian Ogilvy | Ian McShane | Ian MacKaye | Ian Holm | Ian Carmichael | Jeremy Collier | Ian Richardson | Ian La Frenais | Ian Gillan | Ian Dury | Ian Bannen | Janis Ian | Ian Roberts (actor) | Ian McNeice | Ian Edginton | Ian Anderson |