LONDON’S Tube will grind to a halt next month after train drivers voted overwhelmingly for strike action over bosses’ plans to impose all-night and all-weekend working.

The vote by Aslef members is a hammer blow to London Mayor Boris Johnson’s plan to force all-night working on Underground staff.

Members of Aslef, which represents four in five of the drivers, will walk out from 9.30pm on July 8 for 24 hours. Further strike dates are expected to be announced.