Thank you for all the input guys.
I am purely getting the PPL in the UK just to enjoy the flying of GA again.
After 2 weeks, CAA finally replied my email that I would have to re take the ground school exams at a PPL level again because my ATPL results have expired after 2 years.
I would also have to do a PPL skill test as you guys said.
And yes the EASA ATPLs were done in FTA.
Thank you very much.