Hi Esperanza
Having flown in both countries’ I can sadly say that some of the worst flying I have personally seen was in the UK by UK pilots trained in the UK! Anyone who flew into the AeroExpo the other week can confirm this! Some of the Airmanship, flying skills, RT and general procedure following were absolutely abysmal.
I think it’s more down to poor training...if the students had gone to a better school in the US they would be better pilots. There are some awful schools in the UK but they don’t churn out anywhere near the amount of PPL's as the certain schools in Florida your talking about.(I know which ones you mean

).