19:00Mark ForrestClinical drug trials, overnight tube and Swallows and AmazonsBBC Local Radio Duration: 3 hours Mon 22nd Aug 2016, 19:00 on BBC Radio GloucestershireWe hear what it's like to be part of a clinical trial for money, find out about the launch of the 24 hour tube and chat to one of the stars of the Swallows and Amazons movieGenresEntertainmentBrandMark Forrest Source: BBC Online