Commuters can expect a third day of delays in a row following a signalling problem.
The fault at Burgess Hill is causing 30 minute delays on all services between Brighton and Gatwick.
Southern has said there is no firm estimate yet of how long disruption will last but it is likely to continue until at least 08:00.
Thameslink has also informed passengers that they will be running trains at reduced speed due to the problem
More to come.
Are you caught up in the delays? Tell us what you think, email ben.james@theargus.co.uk or call 01273 544536.
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