Monday 29th April
7.30pm BBC One England, Scotland & Northern Ireland Bang Goes The Theory
The series ends with an investigation into air pollution. Was Thunderclap Newman right all along?
Watch: combating air pollution
Tuesday 30th April
6.30pm BBC Two Wales Bang Goes The Theory
9.00pm BBC Two Keeping Britain Alive: Episode 6
A brand new episode of the series shows how the NHS copes with foreign nationals and deals with an outbreak of TB in Bristol.
Timeline of medical improvements during the NHS' lifetime
Wednesday 1st May
1.32am BBC World Service Click
1.40am Yesterday Timewatch: The Princess Spy
Her Majesty's on Secret Service.
Take out challenge, and try feeding a nation in war time.
8.32am BBC World Service Click
4.00pm BBC Radio 4 Thinking Allowed