The face of the only person to have ever assassinated a British Prime Minister has been revealed for the first time through a facial reconstruction.

John Bellingham, an angry businessman, shot dead PM Spencer Perceval in the lobby of the Palace of Westminster in May 1812, before later being convicted and hanged.

The assassin's skull has been on display at the Queen Mary Pathology Museum in London and experts have now used it to reveal what the killer looks like - 206 years later.

Forensic experts at the Queen Mary University of London used computer software to reveal John Bellingham's face (pictured) for the first time - the only person to have killed a British PM

A portrait of Spencer Perceval who became British Prime Minister in October 1809 and was killed less than three years later

Forensic experts at the Queen Mary University of London used computer software and a database of high-res photos to create the haunting image.

Prime Minister Perceval was shot dead by Bellingham while on the way to the House of Commons on May 11, 1812.

The disgruntled businessman shot him in the heart with the Prime Minister's last words believed to be: 'I've been murdered'.

After the killing, Bellingham sat down on a bench and calmly waited to be arrested.

He was hanged for the murder just a week later.

Bellingham's assassination of Perceval came after years of trying to get the British government to redress the financial losses he'd suffered in Russia.

They used the assassin's skull (pictured), which has been on display at the Queen Mary Pathology Museum in London

Bellingham was jailed in Russia in 1803 after he tried to leave the country without repaying his debts.

He accrued the debts after a business venture broke down - though he claimed that the authorities were mistaken.

Bellingham returned to the UK in 1809 after securing his release and petitioned for the government to compensate him - which they politely refused to do.

The research team used a large database of high resolution photographs of other human faces to create Bellingham's own facial features (pictured is a drawing of the killer)

Eight years later, he waited in the lobby of parliament with a gun in a secret pocket in his coat before shooting Perceval dead.

The university came into possession of the skull because the punishment at that time for murder was to be hanged and anatomised.

The research team used a large database of high resolution photographs of other human faces to then create Bellingham's own facial features.

Each specific facial feature was adjusted to fit with the underlying anatomy of Bellingham's skull and facial muscles.

Finally, computer software combined the two together to complete the face.

Conservative MP Henry Bellingham (pictured in 1989) is believed to be a descendant of John

Hew Morrison, forensic expert behind the portrait said: 'I found the skull to be rather unusual looking, with quite a bulbous cranium and noticeable asymmetry of the chin.

'John Bellingham would have had a long, narrow, slightly downturned nose.

'This was apparent when I saw the skull as the nasal aperture was indeed quite significant in length with a downward nasal spine.

'I gave him a neutral expression as I treated this like any other facial reconstruction. Despite committing the crime that he was found guilty of and subsequently executed for, I did not feel the need to make him look bad or mean in any way.'

They later added sideburns to the face because of old drawings that showed him with them.

The hair and eye colour were added later as they can't be determined through a skull.

Bellingham is pictured wearing a Jabot-type necktie and a dark woolen overcoat with his collar turned up, the style that men dressed in at the time.

He is believed to have been 42 when he was hanged.

Current Conservative MP for North West Norfolk, Henry Bellingham, is believed to be a descendant of the businessman.