Better information from the Southern website. So Gatwick Express every 30 minutes (except between 0712-0812 and 1729-1829), Thameslink roughly normal, and services via Hove and Lewes should be unaffected with higher capacity. Thameslink trains are much less comfortable to be honest.
It's frustrating, but the railway always needs an upgrade and upgrades mean disruption.
It's frustrating, but the railway always needs an upgrade and upgrades mean disruption.