A mother whose son was shot dead is to hold a two-week vigil outside Downing Street.

Lucy Cope's son Damian, 22, died after being attacked outside Brown's nightclub in Covent Garden, central London in July.

His killers have never been found and she is now calling for guns to be taken off the streets, tougher sentencing and a ban on the sale of imitation guns.

To promote this message she has founded the Mothers Against Guns group which marched in south London last week.

Lucy Cope founded Mothers Against Guns

Speaking to BBC London she said: "What I have tried to do is to bring public awareness to the gun culture we now have in this country, in London especially.

"It has been heartbreaking, but these mothers have been united... saying 'enough is enough', and we don't anymore killings on our streets.

"And to the people selling these imitation fire arms I say, 'take them off your shelves'.

"They are converted to become lethal weapons and people are losing their lives."

Damian Cope, from Southwark, south London, left the trendy nightclub on 29 July after receiving a call on his mobile.

Loved and respected

He went outside and walked to the junction of Great Queen Street and Newton Street, where he was shot once in the stomach with a small calibre handgun.

He died six hours later in hospital.

Miss Cope said her son was "so loved and well respected".

"I can't understand why someone would want to kill him.

"This was a cold-blooded murder and I want the person who did this to give himself up to the police."