Heathrow Airport is bracing itself for a spate of industrial unrest as around 650 Border Force officers, members of the Public and Commercial Services union (PCS), are set to strike for 23 days starting from August 31 to September 3, followed by work to rule and refusal to do overtime until September 22.

The strikes come amid an ongoing row over alterations to terms and conditions, which has resulted in about 160 staff departing from the Border Force due to inflexibility, while others have…