Murder family's embassy protest

Damian Broom's family say they want justice

Relatives of a man who was stabbed outside a supermarket in west London have held a peaceful demonstration outside the Colombian Embassy.

Damian Broom, 23, died after being attacked near the Tesco store in Greenford on 21 May.

The father-of-one from East Acton, west London, was chased by three attackers through the supermarket car park following a row in the drinks aisle.

Two Colombians police want to question in connection with his death are claiming diplomatic immunity.

The president of Colombia made a promise that he would look into this but they are not taking it seriously

Leona McGoughlin

A military sergeant attached to the Colombian embassy, and his son, have voluntarily given an account of the incident to police and say they are not seeking to evade an investigation.

But they cannot be questioned under caution, or prosecuted, because of their diplomatic status under the Vienna Convention.

The Colombian Embassy told BBC London on Thursday that it will waive immunity if the Crown Prosecution Service decides to press charges.

It also claimed Mr Broom had mugged the son of the military sergeant and attacked the father.

In July, Mr Broom's family petitioned the prime minister to put pressure on the Colombians to waive diplomatic immunity.

Tony Blair raised the issue during talks at Number 10 with the Colombian president-elect, Alvaro Uribe.

Leona McGoughlin, Mr Broom's wife, said: "The president of Colombia made a promise that he would look into this but they are not taking it seriously."

'Waive immunity'

Human Rights lawyer Sadiq Khan said: "There can be no justification or reason for a government refusing to waive immunity when the crime is as serious as this.

"In the longer term the 1961 Vienna Convention on Diplomatic Relations needs to be looked at and amended to bring it into line with the expectation of citizens today."

The Colombian Embassy has said the sergeant and his son will remain in the UK "until such time as the case is fully resolved".

Mr Broom's family are holding the demonstration outside the embassy in Knightsbrige between 0700 BST and 2100 BST on Thursday.