The British Naturism presents British Naturism 50th Anniversary Exhibition The exihibition will be on display in the Bertrand Russell Room on Saturday 19th & Sunday 20th April. 2014 marks the 50th anniversary of British Naturism. It’s going to be a busy year with special events – and we’re already looking forward to the next 50! Back in 1964 British Naturism was formed by a merger of the British Sunbathing Association and the Federation of British Sun Clubs who realised that one strong national organisation presented far more opportunities than having two separate bodies with similar purposes and aims. Doors open from 10.30am to 5pm Saturday and from 10am to 4pm on Sunday. Entry is Free.