Please take the same advice which I give to anyone who asks. Before you shell out a significant amount of money, go and get a CAA Class 1 medical.Then contact GAPAN
Aptitude Tests - GAPAN, or whoever runs proper flying aptitude tests (not the ones which you can find on-line).
Rather spend a few hundred on the above items, than waste tens of thousands to discover that there isn't a career for you in helicopters.
Have you considered doing your licence at the Bristow Academy in Florida, where the flying is considerably cheaper, the weather is far better and you'll be trained for both British and American licences?
If someone has suggested all this already, I apologise for not seeing it.
My helicopter background is both military and civil and I've been a North Sea helicopter captain for decades. Best wishes and I hope you're as fortunate as I have been.