The thing is Shiny Kecks, it all depends on what aircraft you learn on... your older figure of £130/hr seems about the current going rate for a two-seater e.g. Tomahawk/152, where as your other quoted £160/hr seems more like a typical figure for a <180hp 4-seater e.g. PA-28. I would be surprised if there was much variability from that, all clubs/schools in my area seem to be charging about that. Not sure about rates Dahn Sahf but I would reckon they are similar.
In my region all clubs' hourly charges seem to have drifted upwards by about £5-10 over the past couple of years. Most even seem to charge for groundschool now
Only thing that is variable is landing fees, some schools/clubs at smaller airfields with lower landing fees have a slightly higher hourly rate but landing fees are included in the price. You pays your money etc...
Smithy