This is the moment police say a vicious knifeman was caught on CCTV carrying out a frenzied attack aboard a bus in broad daylight.

Marcus Ball, 22, from Streatham, stabbed his victim five times with a kitchen knife as the double decker 250 bus went along Streatham High Road.

He was jailed for three years and nine months at Inner London Crown Court on Friday.

He had already pleaded guilty to unlawful wounding with intent to cause grevious bodily harm at a hearing in June.

The attack occurred at 11am on November 23, 2007, after an argument broke out between Ball and his victim, Derek Spaulding, 37, on the top deck.

As Mr Spaulding went to get off the bus, he was followed by Ball who attacked him at the bottom of the stairs.

He stabbed him four times in the abdomen and once in the wrist before jumping off the bus and fleeing down the busy high street.

His victim gave chase before collapsing at the corner of Gleneldon Road.

It emerged during a hearing to establish the facts of the case that Mr Spaulding is now himself in prison for stabbing a woman in the throat.

He was rushed to hospital by air ambulance where surgeons carried out a life-saving operation.

Ball, who claimed he was carrying the knife for protection, was not arrested until over a year later, on December 7, 2008.

Speaking after the sentencing, Detective Sergeant Danny Gosling, from Lambeth CID, said the length of time until the arrest showed police “were committed to bringing to justice those who carry or use a knife, no matter how long or difficult the enquiry".

Following the stabbing, officers cordoned off sections of the road and made door to door inquiries.

The CCTV footage from the bus finally led them to identify Ball, who they discovered lived in a basement flat within the cordoned off area.

Det Sgt Gosling said the sentencing was “the culmination of two years detective work of the highest calibre".

He paid tribute to his officers and the Crown Prosecution Service who “ensured the momentum of this enquiry was never lost” and “a violent man was no longer able to harm anyone in the community”.

He also thanked Streatham residents, and said catching Ball would not have been possible without them.

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