Staff at the National Gallery in London are to stage a five-day strike in a row over the privatization of services. The walk-out, over plans to hand visitor services to a private company, will run from February 3 to 7.

Last week the Public and Commercial Services (PCS) union said its members had voted by more than nine to one for industrial action. The National Gallery said the proposed changes were "necessary" and that it was "disappointed" by the strike vote.