The label of the world-renowned Rockfield Studios, of Montgomery, Gwent.
Best known for quality of the artists who have recorded there - Queen, Paul Weller, Oasis, etc - Rockfield had its own record label in the mid '70s.
Its first two singles, both by Dave Edmunds, went Top 10 in 1973; after this encouraging start, things got quieter.
A switch from RCA to United Artists c.1974 failed to improve matters, and by 1978 Rockfield had gone back to concentrating on what they did best: recording groups for other labels.
RCA-era singles had their own ROC-0 numbering series; after the move to UA, Rockfield singles shared a UP-36000 series with those of the host company.
Early UA releases had a small 'ROCKFIELD' logo under the main UA one ; later on the UA logo moved and the Rockfield one got bigger .
In the RCA days the label appears to have had a short-lived subsidiary, Maypole.