The situation in London hospitals is really very bad. Child ICUs being used for adult COVID patients, ambulances waiting for hours to drop off patients, reports of some taking taxis to hospital after waiting for hours for ambulances. https://www.independent.co.uk/news/health/coronavirus-london-hospital-nurses-covid-b1780338.html
We have already failed to protect normal NHS services, but we seem to be on the edge of emergency care just not functioning. If you are sick - COVID or otherwise - care might not be there.
Several have warned Tier 4 measures may not be enough to bring down cases, and if that's the case - a further rise is already baked in. We're sleep walking into a catastrophe.