Don't start down the road to be a commercial pilot unless you really, really, really, really, really, really, really, really REALLy want to be a commercial pilot more than anything else.
The training is hard, stressful and life consuming. The financial outlaw can be practically endless.
Then once you're qualified and you're looking for a job, it becomes frustrating and depressing as you suffer repeated rejection, and all the time your IR renewal is looming. And you calculate that whatever job you do over the next umpteen years, you'll still be paying off your debt.
Light turbo props will pay less than average salary, a jet job is likely to come only if you further shell out to CTC or a type rating provider. Currently UK jet operators who are most likely to be hiring in years to come are offering scandalous contracts to cadets - of which more can be found elsewhere on this site.
Yes, it's a very negative picture, but reality for many who commence commercial pilot training. Therefore, I stand by my advie at the top of the post: don't do start down this road unless it's your absolute dream to be a pilot because you may need that motivation to keep you going.
That said, I and countless others here have done it and succeeded, so you can too - but you do need that drive which come mostly from undying ambition.
Good luck.
Captain Bloggs