Yes, today's UK numbers seem to be following the usual weekly pattern of lower numbers on mon/ Tues (having tested on sat/Sun, presumably), followed by a peak on weds/ Thurs. If you look at the specimen date data on the UK dashboard, there doesn't seem to be a huge increase in numbers since last week's surge.
There's also a promising study that omicron is potentially quite a bit milder than previous variants in terms of hospitalisations (either intrinsically, or because of immunity/ vaccination) - with only a third of "expected" admissions in Scotland. Of course there is still uncertainty, but it does potentially allow for a more transmissible variant without "simple arithmetic" necessarily causing hospital overload. Especially if, as seems to be the case, it is about 3 times as transmissible!