Ez,
Best route would be to attend a university with an attached air squadron. Here the RAF will train you to PPL standard.
From there you could possibly buy yourself training on one of the many civilian Jet Provosts that are around (The Jet provost used to be an RAF trainer and was replaced in service by the Tucano.)
To then move on to serious fast jet training your only civilian option would be to negotiate with the Russian Air Force who sell rides in their front line fighters. I'm sure if you had enough money they'd be happy to train you.
I think your total committment would be in the region of GBP 750,000 (Three quarters of a million pounds)
If you think this is possible, is there any chance I could touch you for a loan to buy a new prop for the Piper?
Hope this helps Ez
Rob P