From St Pancras International, Thameslink trains run directly to Gatwick through central London

https://paxtonummm328.trexgame.net/croydon-to-gatwick-airport-tram-train-and-bus-options

From St Pancras International, Thameslink trains run directly to Gatwick through central London. It’s ideal if you’re arriving by Eurostar or connecting from the Midlands.