WOW!!!!
What a read Mark
,I used to buy off John in the mid seventies,yeah, constantly getting the engaged tone,then the "oh yes" moment when the records you wanted were still available.It would have been a postal order and order form to pay as I don't think I had a bank account at the time,remember the weekly paypackets all paid in cash.
When Saxie Russell was a hot track I ordered 3 copies as two mates wanted one 85p each John sent 2 issues and a white demo as it was a multiple buy!!!!!
Think it was also known as the cake factory as nearly every enquiry got the reply S gone haha