The Duke of Cambridge will not attend the event at London's ExCel centre as he remains in Anglesey in his role as an RAF search and rescue helicopter pilot, a St James' Palace spokesman said.
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On Assignment meets the fishermen risking their lives every day to harvest goose barnacles which are almost worth their weight in gold.
The London Fire Brigade say they agree with Mary Berry that no households should have a deep fat fryer.
Building officials reportedly ordered occupants to evacuate after the fire broke out.