Dame Helen Mirren has called on her fellow Brits to rally behind a military support charity after a soldier was brutally murdered on the streets of London on Wednesday (22May13).

The country was left in shock after the horrific killing of 25-year-old Army Drummer Lee Rigby, who was hacked to death in Woolwich, south east London.

At the time of his death, Rigby was wearing a T-shirt promoting Help For Heroes, a charity for British troops injured in conflicts, and now The Queen star is urging fans to stand in support of the organisation.

Donning a Help For Heroes shirt for a photocall, the veteran actress tells Britain's The Sun, "The young man who died... was showing where his heart lay by wearing his Help For Heroes top. It was monstrous that he should be killed for that.

"I think Help For Heroes is a fantastic organisation - it is a charity that does amazing work. This attack won't stop that and hopefully Help For Heroes will just get stronger."