Happened to me that at York teaching Hospital. I'd already got their too....surgical stockings on, slippers..Well quick update,surgery has been cancelled due to the bed shortage. To say I'm gutted is an understatement. Will keep you posted.
Went their for 7am...waited til 2pm to be told their is a bed shortage.
Very nearly happend a second time too....but right at last minute....a bed became available.
The good news is...if the NHS cancel your appointment...they have to offer you another one within 18 weeks. Mine happened 6 weeks later.
Good Luck with your surgery, I'm sure it will be happening very soon.