A huge bolt of lightning directly hit The Shard this afternoon during a sudden downpour in central London. The dramatic moment was caught by Michael Hoskinson who was working in an office nearby.
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The death toll from the Grenfell Tower fire is currently believed to be around 80 people, the vast majority of whom were from just 23 flats.
A letter sent to all 33 local authorities and housing providers in May urged them to consider if panels could be flammable.
The action comes as a commuters' group goes to court to seek a judicial review of the franchise.