A man in Britain killed his parents "deliberately" following a dispute caused by a pet dog.

Sergei Kudryavtsev, a Russian and New Zealand national who lives in Britain, admitted to the Central Criminal Court in London that he had deliberately killed his parents after a pet dog dispute.

The 48-year-old Kudryavtsev, who was with his dog, moved to live with his parents, Tatiana and Vladimir, in their apartment in the Kingston neighborhood of London three years ago.

On May 20, after a dispute with his parents over his dog, Sergey stabbed his parents to death in their home and fled, but three days later he asked the police to inform them of the crime and surrendered.

London police transferred the man to justice, and at the hearing during his trial Kudryavtsev confessed to his crime and admitted that he was in full force when he committed it.