Took me 11 hours to go solo, but I was lucky enough to get an RAF flying scholarship and was sent to Dundee for 3 weeks to do 20 hours flying.
So, based on solo at 11 hours, how many hours from there to the licence?
Allowing for all the mandatory times, looks like a solo between ten and fifteen hours should allow for a licence in under fifty hours assuming no major problems later. This said, everyone seems to stick somewhere, very few just sail through. Might be interesting to know what most posters found hardest for them.