Union boss Mick Lynch apologised for disruption to the Tube caused by strike action but warned it would not be the last if the dispute over jobs and pensions cannot be resolved, with negotiations for a new pay deal looming next year.
Mr Lynch, general secretary of the Rail, Maritime and Transport union (RMT), defended the strikes as he stood at the picket lines outside Bollo Lane, near Acton Town underground station, on Friday morning.
