A jealous husband who stabbed his Vodafone executive wife more than 30 times in a rage after she admitted to an affair was today found guilty of manslaughter.

Sally Sinclair, 40, was killed by ''controlling'' Alisdair Sinclair in a ''frenzied attack'' part-witnessed by children on August 16 last year.

He flew at her when he was told of her infidelity and used several knives on his wife of 21 years to inflict terrible injuries, including an attempt to saw off her head.

That wound sliced through her carotid artery on the left side of her neck and into her spinal cord in what was described in court as a sawing action.

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Meanwhile Sinclair, who was obsessed with cleanliness and hoarding cars and clothes, only suffered minor injuries to his hands, which the prosecution said were self-inflicted.

The 48-year-old admitted the killing at the couple's luxury £1 million rented home in Amport, Hampshire, but said he was attacked and stabbed by his wife during the violent argument and he thought he was dying.

He was found guilty of manslaughter by reason of diminished responsibility and cleared of her murder after a jury deliberated for seven hours.

In the witness box at Winchester Crown Court he said the wounds she had received were ''beyond self defence'' but he could not remember inflicting most of them and he denied murder.

Mrs Sinclair was head of business analysis with the mobile phone company based in Newbury, Berkshire. She had told her husband she did not love him anymore and wanted a divorce a few weeks before her death.