If your still determined this is the career for you but cannot be entertained by an ATC service provider such as NATS or Eurocontrol then you could always look into the private funding route- involving putting a considerable amount of money upfront to pay for an ATC rating course- with no guarantee of passing.
There are a few private colleges in the UK who offer ATC training courses. I would however advise that you have prior relevent experience before even considering this route, such as having an R/T licence or some practical experience at an aerodrome so you know you have a chance of passing the course. Then of course it is up to you find a suitable employer who will then train you up to becoming fully qualified.