Contact us

Our London office is open Mon to Fri from 9.00 am to 5.30 pm.

Registration Enquiries

If you would like to speak to the Challenge team, please call us on 0207 609 6695 or email

General Event Enquiries

Please contact us at

Event Staff Opportunities

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Press & Media Enquiries

Please email us at or call 0207 609 6695



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