Operational performance at Heathrow is measured in a number of areas.
The Border Force is responsible for passport control checks, on behalf of the Home Office. Heathrow records queue lengths and reports monthly.
Border Force performance data
Queue times at security control in Heathrow departures are measured as part of the Civil Aviation Authority's regulation.
Central security queues data
The CAA has introduced a service quality rebate scheme which records performance in a number of areas and incentivises quality of service.
Service quality rebate data
Gender pay gap
From humble beginnings, Heathrow grew to be a major world airport.