It is possible for a validly nominated candidate for Mayor of London, or an individual or party list candidate at the London-wide Assembly Member election, to withdraw their candidature.
A notice of withdrawal must be:
signed by the candidate
attested by one witness
delivered by hand to the place for the delivery of nomination papers
delivered by 4pm on the 24th working day before the poll1
There are no restrictions on who can deliver the notice of withdrawal.2
If the candidate is not in the UK, a withdrawal will be effective if it is:
signed by the election agent
accompanied by a written declaration that the candidate is abroad (also signed by the election agent)
delivered to you by 4pm on the 24th working day before the poll (i.e. by the deadline for withdrawals).
If the candidate is nominated by more than one nomination paper, the withdrawal signed by the election agent is only valid if it is accompanied by an additional written statement signed by the candidate, authorising the election agent to withdraw while the candidate is absent from the UK.3
Withdrawal of an entire party list
A validly nominated party may withdraw that party’s nomination. For this to be effective, the Nominating Officer (or someone authorised in writing to act of their behalf) must deliver to you a signed notice by the close of withdrawals 4pm on the 24th working day before the poll. The notice must be delivered by hand to the place for the delivery of nomination papers. There are no restrictions on who can deliver the notice of withdrawal.4
The details of any candidates who by the close of withdrawals remain nominated must be printed on the ballot papers. If a candidate has not withdrawn by the deadline, their details must go forward to the ballot paper.5