I started punting in the 90s and unless you had recommendation from a buddy it was all very hit and miss. There was a plethora of adverts on cards in shop windows "Lady with large chest" "French polishing service" and all the local newspapers had adverts.
There was also street workers in many places London and suburbs and other towns like Clapham,Streatham, Sydenham, Ilford, Harrow, Dartford ,Reading, Slough
I generally found it often disappointing although there seemed to be a lot more young black ladies working in South London
I think it's much better now with the internet first the WSG and mature review forums like this.