I was referred to Sheffield too. Unfortunately, they have a VERY long waiting list. As in, years.
I asked to be sent to London or somewhere with a shorter waiting list, but it depends on your PCT. Mine would only send me to Sheffield.
I'm pretty sure that the policy with most gender clinics is that you live as male for two years before you can get T, so if you've been told one year, that's not bad at all.
The sooner you start living as male, the better in my opinion. It'll also be less of a shock to the people around you when you do get on T and just start changing.