If you're flying upfront (either Business or First) and can go thru the short-cut, then you should be out rather quickly. But if you're sitting back of the plane and NOT an EU/UK/Swiss citizen, your wait can be anywhere from 15 minutes to an hour thru immigration. Also to consider, will your flight arrive on time?

The time it takes to clear customs and immigration at London Gatwick (LGW) can vary widely based on your nationality and arrival time, but typically ranges from 20 to 60 minutes. For travelers from the UK, EU, USA, Canada, and Australia who can use the ePassport gates, the process is often very fast, sometimes taking less than 15 minutes during off-peak hours. However, for those requiring a manual passport check by a Border Force officer, queues can extend to over an hour during the morning and afternoon "rush" when multiple long-haul flights land simultaneously. Once past immigration, the "Customs" part (choosing the Green or Red lane) usually takes seconds unless you are selected for a random baggage check. To save time, Gatwick offers a "Premium Passport Control" service for about £15, which grants access to a dedicated fast-track lane. It is always recommended to check the live terminal status before arrival, as staff shortages or IT issues can occasionally cause significant delays.