“ Worth looking at Woodfield Pavilion (https://www.thewoodfield.org/) in Tooting to see what they did with a similar building and where they managed to get funding from (Heritage Fund - part of the National Lottery & Landfill Communities Fund). I think we have an eligible landfill less than 10 miles away at London Colney (Tyttenhanger Landfill (Tarmac), Coursers Rd, St Albans AL4 0PG). http://www.tarmac.com/donations/ ”