As the Royal Marsden Hospital begins an appeal to raise £100 million, we look back at the opening of its children's cancer unit in Sutton in September 2011.
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PC Keith Palmer will be remembered permanently at the National Memorial Arboretum, Home Secretary Amber Rudd has said.
ITV News rounds up the best pictures of the day as campaigners make a final stand before Theresa May triggers Brexit on Wednesday.
Demonstrators are gathering to march through central London towards Parliament Square, the scene of Wednesday's terror attack.