When I have to be at Royal Brompton at sparrows fart I stay at Travel Lodge. Its a pain as I still have to get up at SF-2 hours and pre order a cab to take me to the hospital but from Devon the first train doesn't get to London till 8.30 . You could check to see if they have any hotel accomodation on site at Barts? RBH do but it is a Victorian building with one bathroom per corridor which does not suit me.
Presumably you have asked if the hospital has any overnight accommodation? I was able to when I had my ablation at The Heart Hospital in central London 2009
Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.
Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked.