Tom,
Do not do the rating just so you can apply for a job at a few skydiving centers in the UK. I am making this assumption as if you had a job offer you would know the answer as the skydiving center would be advising you. If you do not have a job offer it is pretty much the same as throwing your money away. If you have not spoken to them already go chat with them and see if they have a place for you. If they dont, do a skydiving course with them, become a packer and spend as much time at the DZ as you can. If you are a nice guy you would be next in line to be offered a chance to fly their plane probably if you meet the experience requirements or are close to them.
If you do have an offer of a job and I have got it wrong and you can do it in the US would highly recommend turbine training center in Kansas. Did a C208 initial course with them in 2003 and was very impressed.