Including a few trial lessons, and the first stint (17 hours) until money ran out, I solo'd at 25 hours and was jolly happy with this! There was also a 3 year gap between the first 17 hours and the next 8 to solo, so maybe I could claim 8?
It could have been a couple of hours lower but the day they said I was ready to solo I did not have a spare pair of glasses with me so was stopped on a technicality!
I then completed the PPL course at 59 hours, again I was jolly happy!