I find it frustrating living, as I do, just north of Brighton - especially since Brighton was a pretty good place to punt about 20 years ago. Admittedly we get quite a few touring girls in the Gatwick/Crawley area, so that's the direction I mostly seem to be pointing my car these days.
You could argue that it isn't a problem, with London so close - but it's such a faff travelling there. It would be much easier, cheaper and less time-consuming for me to drive the equivalent distance (40-50 miles) to somewhere in Sussex/Kent/Hants. My nearest train station is 7 miles away. Going up to London takes up most of the day and I usually end up spending £30/40 on top of the punt. It's OK if you consciously decide to turn it into a day out, but I don't want to do that every time I need a shag.