It is being reported that the teachers independent pay review body has recommended a pay rise of close to 4% for teachers. The government told it to recommend 2.8%. Schools can afford about 1.3% with funding increases, anything above that will have to come out of budget cuts.
If the government reject the 4% and go for 2.8%, both main teachers' unions have said that they will immediately start balloting for strike action. If any pay rise is unfunded, strike action is also on the cards.
This is not 'teachers demanding more money', this is the independent pay review body saying that teachers need to be paid more because the profession is underpaid and in crisis.
https://schoolsweek.co.uk/strb-recomments-teacher-pay-rise-close-to-4-reports/