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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Dry for much of the day. Some rain this evening.
It will be a fine start to the Bank Holiday weekend but there's a risk of heavy rain in some places by Sunday.
Yamaha rider Jorge Lorenzo set the pace in practice for Sunday's British Grand Prix.