Old Man Rotor's advice is right on the button, in my opinion. Be wary about committing to a course if you have not had a chance to meet and talk with your instructor.
Never forget you have the ultimate control (in the sense that it is your money). I don't mean be a stroppy git; listen to the advice of your instructor. But do not let the flying school run your training for their benefit.
I very reluctantly agree that you should look to other parts than the UK for your training - our training is being killed by the dead hand of our wonderful regulators.
There is one further thought. You need to look ahead to the time you need to start looking for work (or at least free flying). You are more likely to get a break from an outfit who knows you and where you have spent some money.
Good Luck and just stick at it. If you want it enough, it will happen.