By Claire West

Transport for London are saying that normal tube services are expected on Sunday and Monday despite RMT strike action.

The strike action is due to begin at 21:00 on Sunday and run until 03:00 on Monday but London Underground's Managing Director Mike Brown said:

said: 'This strike action will achieve nothing and I urge the RMT leadership to calmly await the outcome of the employment tribunal without any further strikes.

I have given a cast-iron assurance that if the tribunal rules that we should reinstate or re-engage Arwyn Thomas, then we will do so.

We have given that assurance in writing before this strike action and I make it again now, so there can be no justification whatsoever for the RMT to continue to threaten Londoners with strike action.'