By Claire West

The strike by RMT and TSSA union members is affecting some tube services this evening and London Underground are advising passengers to check before they travel.

The strike will also affect services throughout tomorrow but the underground will be back to normal for Wednesday.

The Mayor of London, Boris Johnson, said: 'Londoners are a hardy bunch and I am sure a Tube strike will not deter us from getting around. I have asked TfL to pull out all the stops. But we must be clear that the RMT and TSSA plan to inconvenience Londoners for no good reason.'

However RMT have today accused London Underground of “playing fast and loose” with safety as the union revealed that tube management have issued a call volunteers to try and run services during the strike regardless of whether they have the necessary Operational Licenses

TUC General Secretary Brendan Barber said: 'Tube staff are right to say there can be no compromise on safety and we fully support their action. The Mayor should honour his election promises and put a halt to these cuts.'