Founded by Tony Prince and named after his radio show, Disco Mix Club began releasing tapes in 1983 to provide a promo service for DJs in the UK. Subscribers were vetted to make sure they were practising pro or semi-pro DJs and a subscription service provided promotional tapes and vinyl (and later CDs) of upfront dance music, megamixes and remixes by a cache of DJs working with the club. This cassette isn’t listed on Discogs and dates from just before any that are there (the first is February 1983), sounding more like a promo for the company at times, it could well be the first DMC tape or certainly one of the first. Initially the organisation would send out between two and four cassettes a month before vinyl versions arrived mid-1984.
Full post here: https://www.mixcloud.com/strictlykev/posts/revolution-tapes-no3-disco-mix-club-previews-janfeb-1983/