If you have a £100k to play with invest it in property not an over priced shiny blue license.
Don't give up on your dream either but start your flight training when you can expect to get a job after it and remember once you go 1 year without a job or flying after license issue your seen as damaged goods and its even harder to land a job.
I'm currently flying 737s and I can tell you there are a lot of unemployed 737 pilots out there with 000s of hours. Who do you the think the airlines will choose? (other than the type rating factories ie EZY & FR)