You should commence the printing of ballot papers as soon as possible after the nomination processes have been completed, the deadline for withdrawals has passed, and final proofs have been signed off.
You must supply the ballot papers to the CRO for the Mayor of London election, the election of London-wide Assembly Members and the Constituency Assembly Member election by a date agreed between you and the CRO.1
You should provide CROs and BROs with information as soon as possible about how the ballot papers will be delivered to them for issue in postal ballot packs and use in polling stations. Data protection considerations and effective management of contractors and suppliers will be critical.