Banking/ATM Services at London Gatwick LGW Airport
Currency Exchange at London Gatwick LGW Airport
you find Bureau de change in
(a) the North Terminal's Departure lounge, lower level; and
(b) at the South Terminal's Check-in level 2, near International Arrivals exit door.
FairFX pre-paid currency card - reload prior to departure, then use it like a debit card .