Unfortunatly your looking at 6-9 months of training and a pay out of atleast 10k uk sterling more likely 15k once you have payed for flights etc.
You need to
read this book has all the details on the hoops you have to jump through.
You will need to go to the CAA in Gatwick as well to get a medical. Which should proberly be the first stop. The intial limits under JAR rules are a bit more limiting than FAA with regards to eye sight and a few other details.