The three-day walk out by maintenance and engineering workers was due to begin on Friday.Read more
Talks are to be held in a bid to avert a strike by London Underground workers over the weekend of the FA Cup Final in a dispute over safety.
Members of the Rail, Maritime and Transport union are set to walk out for three days on 17 May, the day before the showpiece game at Wembley Stadium between Manchester City and Watford.
Thousands of fans would be hit by any disruption to Tube services.
The union has accused London Underground of cutting train preparations, inspections and maintenance which it says threatens safety - however London Underground denies the claims.
Talks between the two sides will be held at the conciliation service Acas on Friday.
The union is planning to hold a protest at City Hall next week urging London mayor Sadiq Khan to intervene.
The RMT said around 1,000 of its members, working on maintenance and other areas, are involved in the row.
Some people are calling for London's transport bosses to encourage greater spatial awareness.
Campaigners want London Underground to display warning signs at stations with the loudest routes.