This is my experience...
Obviously London has the greatest number of prossies. There's something for every taste, but there's also plenty of crap hookers to ruin your day. I've had some great punts in London, but the chances of punting a crap EE girl are quite high.
IMO Manchester has the best parlour in the UK, Sandys. I've only had one bad punt at Sandys and I've been there 6 times.
I've only ever punted in MK once, at HOD and it was a crap punt. From all the good stuff I heard about MK, I was expecting the parlours to be like Sandys in Manchester, maybe I was expecting too much. I much prefer the setup at Sandys. Punting in shared residential locations makes me nervous.
I'm not sure what it's like now, but Brighton used to be a bit of a hidden gem for punting. The parlours used to be open all night and I mean ALL night. Until the sun came up!
My favourite place to punt. Whereas most other venues in the UK are hidden away, answered by a girl hidden behind a door, in Edinburgh the sauna scene is pretty much out in the open for all to see. The saunas have signs outside and when inside, after you've washed up in the communal showers, you can sit in the lounge sipping a drink with other punters, deciding which girl to choose. It's the closest thing we have to a German FKK.