Tube maintenance workers have announced that they will stage two 48-hour strikes over pay and conditions.
RMT union members will take industrial action at 7.00pm on the 23rd of June and the 7th of July. The Piccadilly, Northern and Jubilee Lines are expected to be hardest hit.
The RMT are concerned that when Tfl takes over the maintenance over several lines at the end of July there will be job losses.
"We strongly urge RMT leadership to call off the threatened strike action and to enter proper dialogue with us after our acquisition of Tube Lines," said a Tfl statement.