The looming national rail strike could cost the UK economy more than £90million a year, say experts.
The RMT has confirmed plans for three days of walk-outs by tens of thousands of rail workers on June 21, 23 and 25 in a dispute over pay.
It comes amid what is threatening to turn into a “summer of discontent” as hundreds of thousands of workers across a raft of sectors gear up for possible industrial action.
Most are demanding a decent pay rise in the face of soaring inflation.
The Centre for Economics and Business Research estimated the planned rail and tube strikes will cause a hit of at least £91million to the UK economy, with London set to suffer the biggest output loss.