Nineteen-year-old Alexander’s family told the Telegraph today how they have taken ‘comfort’ from their decision.

They say it delivered hope from their own despair after their beloved son lost his life in a crash on the A8 last April.

Alexander’s grieving father, Shaun, said: “We have received two very sincere and kind cards from the recipients, basically thanking Alexander for saving their lives.

“We decided that Alexander would be an organ donor and we have taken comfort from the fact that Alexander has helped these people.” Mr Campbell’s wife, Helen, told how two grateful men received organs from Alexander which have given them a new lease of life.

She said: “One was a 28-year-old man with two kids and the other one never gave his age but he sounded like a young man who was at college.

“The young boy got Alexander’s liver and the other man received Alexander’s kidneys.” Mr & Mrs Campbell and their other son, Dylan, have also raised thousands of pounds for the hospital which battled to save Alexander, along with the Headway charity which helps the families of people with brain injuries.

Car passenger Alexander died eight days after his friend Jamie Anderson, 20, pulled out from a junction in Port Glasgow into the path of a heavy goods lorry on 12 April last year.

It is a tragedy which ‘never leaves’ the Campbell family as they strive to bring some good from their personal devastation.

They are honouring the memory of a young man who loved life, football and golf and who enjoyed playing five-a-side with his pals and following his beloved Celtic.

And despite the tragedy, Mr Campbell raised a smile as he remembered his son’s knack of never winning on his Saturday football coupon.

He said: “His knowledge of football was, let’s just say, exceptional.

“All those boys, Alexander’s mates, their knowledge of the game was fantastic.

“It’s unbelievable that they all got beaten every week when they put their coupons on. I’d love to be their bookie. They knew everything else, apart from winning on their coupon.” The family have so far raised £6,000 for the Golden Jubilee Hospital in Clydebank and a further £2,000-plus for Headway.

Mr Campbell said: “The hospital did such an amazing job.

“But they never had anyone with experience of head injuries.

“They are heart experts and had to get specialists from the Southern General to treat Alexander.

“They have said that they will use the money to train someone up to deal with brain injuries.” A race night staged by the family in Greenock on 13 February — the eve of what would have been Alexander’s 20th birthday — raised £2,000.

And a football match involving Alexander’s friends and family for a trophy in his memory raised £500 in a single afternoon.

Mr Campbell said: “We have been able to take comfort from the fundraising side of things.

“That is something that keeps you going and gives you something to look forward to.

“It brings you some euphoria and hope as well, but then again, when you reflect back on it, we’ve lost him.” Jamie Anderson has admitted causing Alexander’s death through careless driving.

He is due to appear in court to be sentenced on 26 March.