Get involved Fundraise for us Mike's - London Marathon 2026 Great to be supporting BTF by running the London Marathon. My daughter has been managing an overactive thyroid since she was a young girl and has really benefited from the BTF's work. Having just had her thyroid out, it has been a big year. Looking forward to raising some money for BTF, who empower people to live better with their thyroid conditions. Mike's Enthuse page Manage Cookie Preferences Please ensure Javascript is enabled for purposes of website accessibility