Mick Lynch has urged ministers to put forward new proposals in a bid to settle the bitter dispute with workers, as fresh strikes crippled the network today.
The RMT boss accused No10 of not coming up with any plan to boost pay and end the misery of walkouts.
Speaking on a picket line at London’s Euston station, Mr Lynch said the Government “knows what needs to be done to move towards a settlement that we can all support”.