This subject is thrashed a number of times a week on here. If you are happy to go through the trauma of training to ATPL and not have a job at the end of it then go for it as you dont want regrets etc...
The stats as published recently are approx 6500 apps from qualified pilots for every job in UK.
My advice would be roughly to get your PPL and IMC, enjoy flying and up the training if and when things look better!