Hi bednobs - personally, I'd do Return to Nursing - locally here it'll cost you about £900. You'll need to find a placement but your local Uni offering the course should advise you. It'll always be a string to your bow and you don't have to stay in clinical practice to keep your PIN, as long as you keep your portfolio up to date. Life in the NHS is very lean and mean these days, but a nurse with a PIN can work anywhere and there is a lot of demand in the private and independent sector.
IMO a nurse with good management skills is a gem, so you might want to think about that too!