You are likely to find the answer to your question in our FAQs.
If the answer is not there, please contact us by:
Phone: 0845 36 700 36
Post: Open Water Swimathon, PO Box 4500, London W1A 7LF
*Calls cost up to 7p per minute plus your phone company's access charge
Please note, office hours are from 9am to 5.30pm, Monday to Friday, excluding bank holidays.