David Sparkes, Chief Executive of the Amateur Swimming Association has said every child should have the right to swim. He said:
Every child should have the right and opportunity to learn to swim to help achieve a fitter, healthier and perhaps above all a safer generation of young people.
I am delighted that His Royal Highness The Duke of Cambridge supports this vision and has provided support to our campaign.
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Five people were killed and dozens more were injured after a car and knife attack in the capital on Wednesday afternoon.
Among those expected to attend the ceremony will be former US President Bill Clinton and ex-Northern Ireland first minister Peter Robinson.
Five people have been killed and 40 injured after a car and knife attack in London on Wednesday.