They both received MBEs in 2000 after the completion of the London Eye, also known as the Millennium Wheel, on London’s South Bank.
In the same year Mr Marks was honoured with a special commendation for outstanding achievement in design by the Prince Philip Designers Prize.
Committed to maximising the social impact of their work, Mr Marks and Ms Barfield proposed granting one per cent of ticket sales to the local community in the London borough of Lambeth in perpetuity.
The wider work of Mark Barfield Architects included the University of Cambridge Primary School, art galleries, museums, commercial buildings and housing.
He spent his final days at home with his wife and children Benjamin, Maya and Sarah.
Speaking to the Sunday Times last year, he said: “Architects don’t stop, they just go on building things until they run out of breath.”
“Julia and I never get sick of each other. We’ve been married for 35 years and I can’t put into words how much I love her.”
Mr Marks’s funeral will take place at a private ceremony, with details of a memorial to be announced in due course.
