One of the killers of a preacher’s son, who was mercilessly stabbed to death in a brutal street attack in Harlesden, has lost an appeal against his sentence.

Brent & Kilburn Times: Victim: David HeadlamVictim: David Headlam (Image: Archant)

David Headlam, the son of Pentecostal church leader Bishop Ambrose Headlam, begged for his life as he was subjected to a frenzied knife attack in Drayton Avenue.

Ayman Hassan Koshin, 19, of Summers Close, Wembley, was jailed for life after being found guilty of the 18-year-old’s murder at the Old Bailey in March last year.

His accomplices, Idris Daud and T’Shai Ennis, also received life sentences.

Koshin today challenged his 18-year minimum sentence at London’s Criminal Appeal Court.

Brent & Kilburn Times: Ennis, left, and Daud were both jailed for life tooEnnis, left, and Daud were both jailed for life too (Image: Archant)

His lawyers said he had no previous convictions and his punishment was too tough.

But his complaints were thrown out by three senior judges, who said 18 years was ‘not excessive’ given the horror of the killing.

Lord Justice Simon sitting with Mrs Justice Patterson and Judge Paul Farrer QC, said: “The victim was pursued and then subjected to a sustained and brutal attack in public.

“We are not persuaded there are proper grounds for appealing against the minimum term of 18 years.”

Koshin’s legal team told the court they are now looking into a possible appeal against his conviction following a landmark Supreme Court ruling on the law relating to ‘joint enterprise’ cases.

The court heard the three killers chased Mr Headlam as he walked home with his friend in the early hours of June 29, 2014.

Mr Headlam’s friend was stabbed in the thigh, but managed to get away to safety.

Mr Headlam was cornered in the front garden of a house by two of the attackers.

The victim was heard saying, ‘don’t stab me, don’t kill me’, as he was subjected to the 15-second knife attack which took his life.

Related link: Life sentences for three teenagers who murdered church minister’s son in Harlesden