Believe me - Unite haven't the brains to co-ordinate this sort of action.
This has been bubbling for a while - this was caused by a letter that went out this week from the General Manager of the Ramp and Ground staff - link to the story is here
here.
Unite did not co-ordinate this - BA themselves did - and it is by pure coincidence - or BA wanting to get all the strikes out of the way in one hit - that it has happened this week