Holding Back The Years had an article on Sheds, about 14 minutes in. https://www.bbc.co.uk/iplayer/episode/b08l5j05/holding-back-the-years-series-1-1-maureen-lipman  

There was an article on The World at One about Frome, Somerset and the way they are improving the health of the population, including by attending Frome’s Mens Shed.   31 mins in. https://www.bbc.co.uk/programmes/b09tyzw9