Emergency services working at the grave of Sergei Skripal’s wife in Salisbury yesterday Peter Nicholls

Theresa May is facing a cabinet revolt over the poisoning of Sergei Skripal, with senior ministers demanding tough measures to punish Russia.

Ministers were amazed when May banned a cabinet discussion of the poisoning last Tuesday, silencing Boris Johnson when he suggested the Kremlin was responsible. Skripal, 66, a Russian former double agent, and his daughter Yulia, 33, were found slumped on a bench in Salisbury on Sunday afternoon.

The prime minister faces an ambush at a meeting of security ministers tomorrow. She will come under pressure to:

● Slap travel bans and asset freezes on Kremlin bosses as part of a new law

● Expel Russian spies, with the head of the GRU — Russian military intelligence — in London at the top of the list…