Turnover is measured at the fair value of the consideration received or receivable, net of discounts and value added taxes.
Membership income
Membership subscriptions are recognised on a straight line basis over the period of membership. Subscriptions received in advance that relate to future periods are deferred and included in deferred income.
Courses, events and seminars
Income from courses, events and seminars is recognised when the course, event or seminar takes place. Fees received in advance of the event date are deferred and included in deferred income.
Sponsorship income
Sponsorship income is recognised as the benefits are delivered to the sponsor, either over the sponsorship period or when the sponsored event takes place. Amounts received in advance are deferred and included in deferred income.
Grant income
Grants are recognised using the performance model. Grants with no specific future performance conditions are recognised when the proceeds are received or receivable. Grants with performance conditions are recognised when those conditions are met. Grants received before the conditions are met are recognised as a liability within deferred income.