If you secured a place in the 2012 London Marathon but can't take part on the day because you are ill or injured, here's what to do to run in 2013:

• You must go to: www.virginlondonmarathonballot.com/withdraw and complete the online withdrawal form. This must be done no later than April 22nd 2012. You will then receive an email confirming your withdrawal.
• Providing you adhere to the dates below and pay the appropriate entry fee, you will be accepted for the 2013 race unless you have already carried your entry over from the 2011 race or if the entry was received from a charity or sponsor.
• You should receive an email link for the 2013 race by 1st June 2012 –If you have not heard from us by the 1st June 2012, please telephone our helpline on 0207 902 0200 on the 1st June 2012.
• You must complete your online 'Ill or injured' entry and paid the entry fee no later than 5pm on the 22nd of June 2012 failure to do so will result in loss of entry.
• It is the runners responsibility to ensure they have completed their online 'Ill or injured' entry form by the above closing date. The deadline date will not be extended under any circumstances.