Which staff in ICUs are you listening to?
Given that as of yesterday there were only 15 people in the whole country ‘with’ Omicron (with, not because of) I fail to see how they are ‘filling up’.
Also given there are currently c7.5k people in hospital with it, compared to c40k at the peak, I’d say we have plenty of head room yet because anyone could claim, with a straight face, that we’re filling up.