Harrison was accompanied by his grandmother and wore his Uncle’s medals.
Mrs Lewis said: 'We remember Aaron every day and miss him every day. It was lovely to speak to Prince Harry about Aaron.
'A charity set up in his memory is helping veterans that have been injured, both combat injuries and those with post-traumatic stress disorder.
'Our charity has even helped some of the guys that competed in Harry's Invictus Games and we were talking about that.'
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