What is fast track?
Fast Track Security is a service offered at many airports that allows you to bypass the normal security lines through a special fast lane. From just £3.50 per person you'll significantly reduce the amount of time spent waiting in line, particularly during busy travel times.
The price varies depending on the airport you're flying from, and not all airports have a Fast Track lane, so it's worth checking in advance if your airport does.
Some airports like Stansted may also offer a fast track option for Passport Control, which can save you time when returning to the UK.