As was the case with 'CC', this is named after its prefix. The only record on the label found so far is 'Alan Mack Live At The 'Trocadero' Night Spot Nuneaton'. The EP was numbered CCR-1002, which suggests that there's at least a CCR-1001. There's is no date on the record but the Trocadero is reported to have operated from the early '70s into the early '80s, so there's a decent chance that it's from the 70s. With Nuneaton being close to Coventry, I suppose 'CCR' could stand for 'City of Coventry Recordings' or something like that, but that's just a wild guess. Thanks to Robert Lyons For The Info.
Alan Mack Live At
The 'Trocadero' Night Spot Nuneaton