A person has been hit by a train near Basingstoke, causing delays of up to 30 minutes.
South West Trains passengers may use First Great Western services between London and Basingstoke via Reading and also between Basingstoke and Andover.
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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".