Average UK PPL time is 55 to 65hrs depending on who you ask.
Cost varies but £8000 is probably average.
Some did it in the min (45) but they were either exceptionally talented and young people, or they had copious amounts of unlogged flying time with other pilots.
If you can pull off a lot of flying time as a passenger, with a good pilot, you will easily do a PPL in the minimum time.
The USA is still cheaper but fuel costs have risen steeply so it's not as cheap as it used to be.
The single most important factor is whether you can fly every day and treat it as a full time project with no distractions. It has been done in the UK but rarely because of weather and also most people prefer to fit the PPL into their lifestyle. Whereas if they go to the USA they fly all the time which obviously helps.
I would recommend Arizona over Florida. However the only CAA approved school (for a JAA PPL) outside Florida is in S California. All the others will give you an FAA PPL.