Martin Amis in 1981 talking about Vladimir Nabokov on a rather stiff and starchy programme called 'Paperbacks'. The other guests were Douglas Adams, Jessica Mitford and Tom Sharpe. The presenter was Robert Kee.
NB: This is from an old off-air VHS, so quality varies. The section of this edition of 'Paperbacks' with Douglas Adams talking about his second novel 'The Restaurant at the End of the Universe' is available on the third disc of the DVD/Blu-Ray 2018 special release of the BBC TV series of 'The Hitchhiker's Guide To The Galaxy' (1981).