Medics told Lucy he could die or be left paralysed.
She added: “The vows ‘In sickness and in health’ really did mean something. Going through so much has made our bond stronger – there were tears all round.”
Campbell’s recovery is thanks to the trauma team at the Royal London Hospital, who saved his life, and specialists at Queen Mary University’s Centre for Trauma Sciences, who transform hundreds of shattered lives every day.
The couple are sharing their story to support the Transform Trauma campaign, which has been launched by Barts Charity.
Lucy says she can see signs of the old Campbell emerging, something which at one point
she had never imagined might happen.
Glasgow-born property manager Campbell, 32, has no memory of his accident, which happened when he went for drinks after work with colleagues in June 2013.
Witnesses say he scaled a fence and a wall near Fenchurch Street station in London before falling.
While Lucy was at home in Hornchurch, Essex, Campbell was rushed to the Royal London, part of the Barts Health NHS Trust.
Lucy said: “We were told he was going to either die, be fully paralysed, or have a brain injury and his personality would change.”
Campbell spent three weeks in a coma before he stabilised.