A businessman and his personal trainer have been jailed for a fire attack on a car outside a policeman's home in Dundee.

A judge told William Handy and Craig Guest: "It was designed to intimidate a police officer who had been carrying out his lawful duties."

Lord Woolman said the deliberate blaze was calculated to violate the home of PC David Farr and his private life.

He added it was fortunate that the fuel tank of the vehicle did not explode and lucky that no one was injured.

Former soldier Guest was jailed for six years after he ignited petrol poured onto the vehicle which was parked at the officer's home in the Ballumbie area of Dundee.

The judge sentenced Handy to five years' imprisonment at the High Court in Edinburgh and told him: "You were the architect of this pernicious crime."

Guest, 32, of Nelson Street, Dundee, admitted wilfully setting fire to the car on June 23 in 2014.

Handy, 54, of Middlebank Holding, Errol, Perthshire, was found guilty of the same charge after a trial.

The court heard that in early 2014 Handy believed that the police were waging "an unfair campaign of harassment" against him after pulling him over and placing him in handcuffs.

However, Lord Woolman said police were conducting a lawful operation in the Tayside area which was not directed against Handy but he became of interest as an associate of others.

Handy passed the officer's address to his personal trainer Guest and claimed he was being hounded by the police.

The constable lived with his wife and infant daughter in a quiet residential street in Dundee but was wakened in the early hours of the morning by the sound of a car alarm.

When they went to the window they saw his wife's car ablaze.

Before firefighters arrived, the couple tried to put out the fire with the aid of a neighbour but the car was destroyed.

Officers investigating the blaze discovered it had been started deliberately using petrol and a tub which had held fuel was recovered with Guest's DNA on it.

Guest claimed that someone told him they wanted a car set alight but he refused to name the person for fear of reprisals against him and his young son.

He alleged that he did not know who stayed at the house but later learnt it belonged to a policeman.

Defence counsel Gary Allan QC said that Guest had found himself in debt and was under significant pressure to repay it, but was unable to do so.

He said: "As a quid pro quo for the extinguishing of the debt a proposal was made that he would provide a service, a criminal service, in carrying out the act to which he has now pled guilty."

Guest had written a letter stating that he was "completely ashamed of myself" and that he was in "a desperate place" at the time of the offence.

Mark Stewart QC, for Handy, said: "He maintains his position of innocence."

He added that Handy had never previously served a custodial sentence.