When the action took place last year Bakerloo line services were suspended between Harrow and Wealdstone and Queens Park stations due to the Tube strike on Friday evening.
On the Saturday there was only a partial service in operation south from Queens Park south to Elephant and Castle.
However as with all strikes please check the Tube's website before you leave for the latest information. At time of writing there has been no statement from either TfL's or RMT leader, Bob Crow about this action.
Update - 14th January 2011 - London Underground expect that disruption will be unlikely on the Northern Line, however significant disruption on the Bakerloo line is likely, though they intends to run as many trains as possible.
Howard Collins, LU's COO said : "The union leadership failed in its attempt to gain support for the strike from Northern line staff. Less than 20 per cent of those balloted voted for strike action, and on the Bakerloo line only one in three of those balloted voted to strike.
'For the RMT leadership to try to disrupt Londoners in this way shows a disregard for Tube passengers and contempt for their own ballot process.
'We will once again seek to operate the best service possible. The last Northern line strike had no effect and we managed to keep a service running on parts of the Bakerloo line despite the action there. The RMT leadership should stop threatening Londoners with strike action and let our staff get on with their job of keeping the capital moving."