This may well sound like a bit of shameless advertising (which I guess it sort of is :P) but in Berkshire at any rate the paramedics in SJA do get the opportunity to attach themselves to local divisions and take part in their training; obviously it's difficult to fit around shifts, but it gives the opportunity to practice your skills. If you don't want to turn your work into your hobby I can totally understand that ^.^ But just thought I'd mention it, if work doesn't provide support then it might be worth looking to other organisations...