I think this is a very relevent point, and needs to be looked at in terms of the long term trajectory the NHS has been taken. - Maybe this is a valid topic for a new thread.
Over the last decades, the NHS has very much taken a "bigger and fewer is better" role for hospitals. Major hospitals in major towns and cities have had huge multimillion pound rebuilds, whilst smaller outdated facilities have been closed. In 'normal' times this has nto nessesarily been a bad thing, often the bigger hospitals can offer the specialist treatments that a smaller hospital couldn't. No doubt the pooling of resources at the larger facilities has a cost benefit. However what it does mean, is you have far more human-human contacts, simply because you have more people roaming around in the same massive building. You have porters, cleaners, nurses, doctors, patients and visitors, all roaming around from ward to ward within the same building, touching the same elevator buttons, opening the same door handles. It must be a nightmare for transmission control. As a result
I know in some countries, where they have not taken this amalgamation approach to their healthcare, they have been able to designated facilities as covid and non-covid hospitals. In these cases staff have not been mixing between the facilities. Whilst I am sure it is not 100% effective, I am convinced that this kind of thinking has reduced transmission, thus reducing the impact upon the health facilities and their staff.
I think it is something that the UK will have to re-visit. Obviously there is an opposite end of the scale where there are far too many small hospitals that they cannot function efficently, but there can be no doubt that the general thrust of UK heatlh policy over the last decades has been this amalgamation approach, evidenced by the regular and repeated "save out local hospital/A&E/surgery" campaigns.