Weather warnings for thunder, lightning and sudden floods are in place as Britain is hit by storms. The Met Office is warning of severe weather across southern England and Wales, with thunderstorms overnight sparking travel chaos this morning.

       The yellow warnings covered parts of Cornwall, Bath, Portsmouth, Swansea and Cardiff for 12 hours from 8pm last night. Meanwhile a second warning, covering London, Oxford, Gloucester and Chelmsford, lasted until 10am.

       London, parts of the south-east, and areas in the south-west have all been hit with rail delays, after the inclement weather struck during the small hours of last night.

       Meanwhile there are severe delays on the Northern Line.

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