Two out of three young men from High Wycombe, who were jailed for killing a Slough teenager, have had their "too soft" jail terms increased by top judges.

Kaneel Huggins, 19, and Antwon Clarke, 18, were found guilty of manslaughter after Wa-ays Dhaye was stabbed eight times in a savage attack in Slough on August 31 last year, as he made his way home after attending the Notting Hill Carnival.

The 18-year-old was just yards from his home and alone when he was ambushed.

Khianni Gordon, 19 was found guilty of his murder and was jailed for life in April, while Huggins was jailed for 10 years and Clarke for nine. Huggins was also convicted of perverting the course of justice.

The sentences handed to Huggins and Clarke have now been increased to 16 years and 15 years respectively by judges sitting at the Court of Appeal in London.

They were urged to review their jail terms by the Attorney General, Jeremy Wright QC, who argued they were “far too low”.

Upping each of their sentences by six years, Lady Justice Sharp said the original terms were “simply inadequate” to reflect their role in the teenager's death.

Sitting with Mrs Justice Elisabeth Laing and Mr Justice Knowles, she added: “Gordon was convicted of murder because he intended to cause serious injury, and Huggins and Clarke of the lesser offence of manslaughter because they intended only to cause some harm.

“But it was entirely foreseeable to all concerned that death might result from what they planned to do.

“As the trial judge put it, stabbing with a knife is not a precision exercise, and all three knew stabbing a man repeatedly with a knife led to the inevitable and high risk that he could be killed.

“The seriousness of the offending was further aggravated by the fact that the attack was by a group of men at night, in a public place, on a victim who was alone and vulnerable.”

The court rejected a bid by Gordon to have his 19-year minimum term reduced, saying it was “not excessive”.