Dan and Helen's - Leeds 10k 2024 Donate Running the Leeds 10k is something that we've wanted to do for a while but work has always got in the way. Our young daughter has an overactive thyroid caused by Graves' Disease. We're a lot more aware of thyroid issues now and want to help the British Thyroid Foundation if we can. Daniel Hornsey Manage Cookie Preferences Please ensure Javascript is enabled for purposes of website accessibility