Prescription drug abuse seems to have a high cost of entry over there. As far as I know, NHS GPs here are quite limited in what they can prescribe, and can only write a prescription for Ritalin or amphetamine after receiving a psychiatrist's recommendation, but I haven't paid a penny for any part of my treatment and never had to give a urine sample. At the moment I'm on 20mg of dexamphetamine a day.