Delays of up to 40 minutes on Gatwick Express between Victoria and Gatwick Airport due to broken down train at Clapham Junction and safety checks at Wandsworth Common.
There is no estimate for when a normal service will resume. Also affecting Southern.
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Dry and sunny tomorrow and feeling warm.
Mild tonight with warm sunny spells and light winds tomorrow.
A section of the M3 has been closed and bomb disposal units are at the scene after reports of "potential hazardous material in the road".