Not really an agency, perhaps a way to get your acts at a discount.
Ran by Pat Day, the agency booked its own clubs - Rowntrees Sound (Hanging Ditch), Top of the Town (Cross Street), Spring Gardens and Takis (Oxford St). I can remember Pat being pleased she had managed to get a pre-"Gin House" Amen Corner for their usual low rates. Most groups at the clubs got between 15 and 25 pounds for the night.
On looking at an old contract, I spotted the following "The Artistes should arrive no later than 7 pm. Should they arrive after this time, a reduction of $2 for every 15 mins will be made". Remembering that they often tried to sling the band out of the club within minutes of the bar closing, it was somewhat unfeeling.