South Yorkshire Fire and Rescue Group Manager Andy Hayter told ITV News Calendar the Asos warehouse blaze near Barnsley was probably caused deliberately, though investigations are still ongoing.
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The event was Ant McPartlin's first public appearance since he announced he was splitting from his wife.
Trade secretary Liam Fox's potential post-Brexit deals would be of no use to British carmakers due to tariffs when selling abroad.
Gunmen have stormed the offices of Save the Children in Afghanistan, killing at least one person and wounding 14 others.