Boris Johnson has risked enflaming a fresh row with unions as Downing Street backed a minister's claim that teachers going on strike post-pandemic would be "unforgivable".
Education Secretary Nadhim Zahawi lashed out at the National Education Union (NEU) as part of an article in the Telegraph, saying strikes by the UK's largest teaching union would be "irresponsible".
The NEU has said it will consult its members and “strongly encouraging them” to back industrial action over pay and workload in the autumn if the government failed to respond to its concerns.