Ariana Richards, the actress who played Richard Attenborough's granddaughter in Jurassic Park, has said the late actor was a "light in my life".
She told ITV News that he used to spend breaks in filming telling her stories, and that she saw him as a grandfather figure off as well as on the screen.
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TV presenter Helen Skelton is a supporter of the campaign and is calling for more parents to get out on their bikes with their children.
Mrs Justice Nicola Davies will sentence Berlinah Wallace, 48, at Bristol Crown Court.
The JR4NHS group was founded by three doctors and a university professor, and supported by the renowned physicist until his death in March.