Ok, here we go...
Do you have a spare £140,000?
After spending just over a year learning to fly, will you be able to afford to spend another two years living on nothing?
Are you prepared to move away from friends and family for a very extended period?
If No to any question, don't bother flying.
Instead, for a fraction of that money, I'd do a Part P exam, a Gas Safe Course and get some joinery training. Then with change left from £25K or so, buy my tools and a crappy van, stick an add in the paper and let the cash roll in. In my spare time I'd fly Open Class gliders or Pitts Specials.
Really, forget flying. At the moment, the only people it's good for are those at the top. Only when there is real shortage (don't hold your breath) will it be worth entering.