You will also require to have a fixed wing Instrument Rating, in my case, oh so many years ago, I had to do the IR training at an approved school, CSE Carlisle was my most convenient, course not less that 30 hours in a twin, ALL may have changed now. One way is to visit CAA with all log books and licences, evidence of military flying if applicable, and they will do a full assessment, their report will state exactly what you have to do, both written and flying.