Sam tells a great story if you buy him a bottle of J2O.
As I remember it when he told me...... he had this residency in Wrexham in the middle of a big estate and the music was all soul / motown and reggae. Anyway one night they book Radio 1 DJ Peter Powell to do a turn. This was quite a common thing in the 70s where the Radio 1 jocks would turn up, do a set, sign autographs then go home. Anyway Powell turns up in I think it was silver platform boots, "Star" jumper, big perm etc. and is about to go on when he tells Sam to dig out "some Quo" for his first record. Sam tells him he'll get lynched if he puts anything like that on, and proceeds to feed PP a series of Motown / soul and reggae records, which Powell is forced to spin. Sam reckons Powell didn't know what he was playing, but went down a storm with the locals for playing all the right kind of stuff. I am sure he'll tell it better than that, but that's the jist of it.
Down south we had things like the "Teen & Twenty club" - they had a roster of DJ's - although they played some soul they also played pop / disco and even R&R for the wanabee teddy boys. I guess it was different oop't north