I used to want to be a psychiatrist and a while back I sent an e-mail to the RCP, I got a reply saying to first be a medically qualified doctor (so an undergraduate degree around 5 years), then there's a 2 year Foundation program (placements in various positions). After that, you can then specialise in psychiatry, which is 3 years core training, then 3 years higher training, where you decide which field to specialise in. Finally, there's the exam to be accepted in the RCP. So you'll be around 32 years old by the time you're a psychiatrist.