Do not automatically buy Gatwick Express
Gatwick Express is the clear speed benchmark if you want London Victoria. London Gatwick currently publishes a 30-minute non-stop journey with two departures per hour. That is excellent for hotels around Victoria, Westminster, Pimlico, Belgravia and parts of the West End.
But a traveller staying near London Bridge or St Pancras can often avoid an unnecessary cross-London transfer by using Thameslink instead. Gatwick lists direct Thameslink services to London Bridge, London Blackfriars, City Thameslink, Farringdon and St Pancras International. In those cases, a train with a slightly longer airport leg can produce the shorter and easier door-to-door journey.
Southern also runs between Gatwick and London, including services to Victoria and Clapham Junction. This gives you another rail option when the timetable, fare or final destination fits better.
