William Budge was previously jailed for seven years and four months in February 2025 after earlier pleading guilty to three charges at the High Court in Edinburgh.
This included a charge under Section 1 of the Domestic Abuse (Scotland) Act 2018 as well as assault to severe injury, permanent disfigurement, permanent impairment, danger of life and attempted murder.
The Crown Office and Procurator Fiscal Service asked the Appeal Court to consider imposing a more severe sentence.
The original sentence has now been quashed after the appeal was upheld by a panel of three judges.
The 62-year-old has now been sentenced to 10 years and 10 months' imprisonment.
While sentence is rightfully the domain of the independent judiciary, the balance of justice is served by the Crown being allowed to appeal in limited circumstances.
The Appeal Court has set a high test to be satisfied that this can happen.
The sentence must be unduly lenient, meaning it falls outside the range of sentences which the judge could reasonably have considered appropriate having taken account of all relevant factors.
Laura Buchan, Deputy Crown Agent, said: “COPFS is committed to improving the criminal justice journey for victims
“Prosecutors have a responsibility to consider appeals based upon undue leniency in sentencing. Such appeals are rare.
“The decision to increase William Budge's sentence provides reassurance that the impact of domestic abuse on victims is recognised by those within the criminal justice system.
“No one should have to live in fear of a partner or former partner. I would urge anyone affected by this type of offending to report it and seek support.”
Budge attempted to murder the victim on 14 April 2024 outside her Edinburgh home, leaving her with life-threatening injuries.