The Highways Agency says it has filled the hole in the M2 in Kent with 40 tonnes of shingle.
This, officials say, has stabilised the hole and is helping them assess the extent of the problem.
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More than a tenth of the Piccadilly Line train fleet is out of action because of emergency repairs to damaged wheels.
Rows of students stood and turned their backs before filing out of the lecture theatre.
Effie the endangered Western lowland gorilla has given birth to a healthy baby boy at London Zoo.