Contractor and Perm salaries in the tech sector to me are a good representative of the situation overall. Wages in these areas have stayed roughly the same because there's an illusion that they are already paid too much (5-10%+ over 3 years). Inflation + the race down make the UK job hunt seem less and less appealing to the extent I know a few people who've packed up and gone across the pond to Europe. The skills shortage is only going to get worse with an already stretched and dwindling pool of people and there is no sign of let off to undermine wages yet, and this is just in London.
The situation of pay falling despite a shortage of workers is bizarre but we can't forget the efforts to undermine and keep wages low.