Those declaring as NADPO members will be provisionally allocated a free place and bypass the checkout.

However, invoices will be sent by a subsequent manual process to anyone claiming a free place who has never been a member, or whose membership is discovered to have expired. They can choose to either pay the £50 guest fee for this event only, or join/rejoin for a 24 month period starting from the date of payment by paying the £130 2-year membership subscription.