Agenda seems to have been a one-off DIY label; at least, if there were any other releases than the one shown above, 'C'mon Kids' b/w 'Travelling Man' by The Kids, they don't show up on google. The band were from Aberdeen, and their single came out in 1979. As you can see, there are two numbers on the label: GM-480 and GM-47980. I suppose one is the catalogue number and the other the matrix number, but neither fit any series that I can remember happening upon. Thanks to Stephen Small for bringing the label to my attention and for supplying the scan.
Copyright 2014 Robert Lyons.