Talks which took place earlier this week between airport managers and the Transport and General Workers' Union (TGWU) in a last-ditch attempt to halt the stoppage, ended in deadlock.

The union wants managers to withdraw threats to cut 150 security jobs, cut wages by up to 40%, reduce holidays and introduce new rosters.

A series of one and two-hour strikes has already taken place, but the TGWU has decided to step up its action.

Contingency plans

Brian Bowen, regional industrial organiser for the union, said: "All our actions so far have been designed to cause the least disruption possible for passengers.

"But our members are adamant they want to resolve this dispute and therefore decided to hold a 36-hour stoppage.