The one-hour programme, entitled Dave Allen Night, will feature rare and often previously-unseen archive footage plus interviews with family, friends, and colleagues.
Together with Allen's family, other interviewees include Dame Maggie Smith, Stephen Frears, and Steven Berkoff. It will also feature archive interviews with Bill Cotton - the former head of light entertainment at BBC TV who went on to become the controller of BBC1 - conducted shortly before the television executive's death in 2008.
In addition, the cast and crew of the triple-BAFTA-winning Dave Allen At Large - the comic's best-known, long-running BBC show - unite to talk about their memories of working with Allen, who often courted controversy with his views on politics and religion.
The documentary - whose broadcast date is yet to be confirmed - is a Vera production and has been executive-produced by Geoff Atkinson. It was commissioned by BBC Two controller Janice Hadlow and entertainment commissioning executives Gilly Hall and Mark Linsey. Hall said:
We are delighted to be celebrating the life and work of the inspired and extraordinary comedian Dave Allen on BBC Two. He was an entertainer ahead of his time and an acclaimed actor too.Allen - who won the Variety Club's ITV Personality of the Year Award for his comedy/chat series Tonight With Dave Allen - died in March 2005 at the age of 68.