Campbell was given a life sentence, with the recommendation that he serve a minimum of 20 years, for his part in the so-called ice- cream killings - one of Scotland's biggest mass murders.

In April 1984 in Glasgow's east end, in lawless estates such as Ruchazie and Carntyne, in-fighting between rival operators of ice-cream vans was close to boiling point. Violence and intimidation were almost daily occurrences as the various factions vied for territory. Vans were raided and shotguns were fired.

Pokey-hats and ice-lollies, not to mention single cigarettes, it seems, made for a lucrative business. But beneath a farcical veneer - police detailed to follow the ice- cream vans were dubbed the "serious chimes squad" - criminals were at one another's throats.

Something had to give. In the early hours of April 16 a fire was started in the cellar of a flat in Bankend Street, Ruchazie, which had petrol splashed across its front door. With the help of chemicals and car tyres it spread quickly. In the house were nine members of the Doyle family, one of whom, Andrew "Fat Boy" Doyle, operated an ice-cream van whose windscreen had recently been shattered by a shotgun blast.

The Doyles awoke to a flaming ceiling and dense black smoke on all sides. Six of the family died, including Andrew and his 18-month-old nephew.