If you’re anywhere near a radio at 4pm today, tune in to Radio 4′s Last Word, where you’ll catch Tom Baker reading an obituary to the late Doctor Who producer Barry Letts, who died last week.

Letts was responsible for the casting of the Fourth Doctor, one of his last major tasks as producer of the series, and also oversaw Tom Baker’s first appearance, Robot before handing over the reins of the show after 5 years to Philip Hinchcliffe.

The 28 minute broadcast is a regular weekly show which features tributes to the recently departed.

If you miss the broadcast, it will be available via BBC iPlayer for seven days.