Striking unions could face restrictions on their use of social media, the TUC's general secretary has told the BBC.

A consultation document linked to the proposed Trade Union Bill suggests unions involved in industrial action should give two weeks notice if they plan to campaign via social media.

Frances O'Grady said an attack on trade unions was "unfinished business" for "some elements within governments".

Ministers said any restrictions would not apply to posts by individuals...

See Trade Union Bill: TUC fears over social media restrictions (BBC News) for more details.