I'd love for @BBCNews to quote their sources because I cannot corroborate their sensational news about London emergency services being overwhelmed with COVID incidents with the published data. https://www.bbc.co.uk/news/uk-england-london-55461390
Up until 23rd Dec, London COVID 999 triage is evidently nowhere near Spring peak. I'll check again in a few days to see if Boxing day did see a dramatic rise as they report but it would be extraordinarily sudden.
What I also observe is that the same three boroughs that were lightest hit in Spring represent the highest relative call volume now. This would indicate that it is highly unlikely that pressure could get anywhere near the same but I could be wrong.