Leon Briggs's family said they were deeply shocked by his sudden death. They added: "Leon was a loving father, son and brother. He was a kind, loyal, intelligent, caring person who put his family and others first.
"We have a lot of questions about why he was put through this terrifying ordeal and why he died. We feel he has been let down by the authorities at a time when he should have been provided with specialist care and support."
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Family and friends will hold a private service in "the city that he loved so much and which loved him”.
Norwich Cathedral's Master of Music is running the London Marathon as Great Ormond Street Hospital's mascot 'Bernard the Bear'.
a largely dry day with sunny spells