Membership bands
Class band
Annual membership
National Association A: ≥ 200 members
National Association B: ≥ 75 < 200 members
National Association C: < 75 members
Corporate Tier 1: turnover ≥ US$50m
Corporate Tier 2: turnover ≥ US$20m < US$50m
Corporate Tier 3: turnover ≥ US$2m < US$20m
Corporate Tier 4: turnover < US$2m
Other: Academic Institutions, municipalities, local authorities, lawyers, accountants
* Discount for non-OECD national associations: 50% off above prices
£5,500
£2,600
£650
£5,500
£3,750
£2,600
£1,100
£550
