Rio Cinema

I believe that HJM Cinemas Ltd ran the Pavillion Cinema Redhill from the mid 1930s until the 1950. Does any one have further details about the cinema as it used to be? Any memories, the films, the personel, any photos? I am researching my family history of HJM Cinemas Ltd who also ran the Astoria Purley, The Picardy and Coliseum in Harlesden. and look forward to your replies.