There's currently disruption on First Great Western between Banbury and Oxford due to emergency services dealing with an incident.
All lines are currently blocked and there is no estimate for when a normal service will resume. Also affecting CrossCountry services.
There are also delays of up to 40 minutes on Gatwick Express between Victoria and Gatwick Airport due to signalling problem at Victoria. Some trains may also be cancelled. Also affecting Southern services.
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Sunny this evening, then dry overnight. There is the risk of thundery showers for Kent tomorrow morning, then sunny spells by the afternoon
Sunshine to end the day then dry tonight. Tomorrow will be mostly dry and feeling fresher with the risk of a heavy shower in the afternoon
The video, obtained by ITV News, shows scores of migrants desperately trying to board lorries in a restricted area within the tunnel.