I found this Q&A in the 'Western Daily Press' dated 15th October 1974:
“Q: I would be grateful if you could tell me how to obtain the publications you mention, particularly Vintage Record Mart. Mrs B. Painter, Nether Stowey, Bridgwater. A: THE TWO publications I mentioned, 'Record Mart' and 'Vintage Record Mart', are available from 16 London Hill, Rayleigh, Essex SS6 7HP. The price of the first is ??p per issue and the second 20p per issue.”
“Q: I would be grateful if you could tell me how to obtain the publications you mention, particularly Vintage Record Mart. Mrs B. Painter, Nether Stowey, Bridgwater. A: THE TWO publications I mentioned, 'Record Mart' and 'Vintage Record Mart', are available from 16 London Hill, Rayleigh, Essex SS6 7HP. The price of the first is ??p per issue and the second 20p per issue.”