I'm in haverhill, we drive to epping, change at Oxford Circus & get off at Warren Street. Must admit, parking was a big issue at epping, but found a great site called justpark. We hire someone's driveway for the day for about £6, just behind the station. Works out good.
I was worried about coming home too. Managed to speak to a couple of people while I was in clinic that had already had their surgery. Both had to go home on the tube, which is slightly worrying. But I guess there must be other ways to maybe get collected???? It's a big hospital, can't imagine they send all their poorly patients back on the tube???
I'll let you know as soon as I work it out lol