GTR operates Southern, Thameslink, Great Northern and Gatwick Express.

Source: https://www.bbc.co.uk/news/business-61634959?at_medium=RSS&at_campaign=KARANGA

On Sunday, May 7, work is taking place at London Victoria, which will mean no Southern trains to and from the station and no Gatwick Express services.

Source: https://www.standard.co.uk/news/uk/how-get-central-london-kings-coronation-travel-advice-b1074629.html

On X, formerly known as Twitter, the Gatwick Express account has announced that all lines have now reopened through Balham but recommends that passengers allow extra time to complete journeys and check before they travel.

Source: https://londonnewsonline.co.uk/gatwick-express-train-crashes-into-tree-causing-chaos-on-railways/?utm_source=rss&utm_medium=rss&utm_campaign=gatwick-express-train-crashes-into-tree-causing-chaos-on-railways