Membership bands
Membership tier
Annual membership 2025
National Association A: ≥ 200 members
National Association B: ≥ 75 < 200 members
National Association C: < 75 members
Corporate Elite Tier: turnover ≥ US$100m
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
Financiers and Banks
Law Firms, Accountants, and Insurers
Government Agencies, National/Regional Government, and NGO’s
Academic Institutions
* Discount for non-OECD National Associations: 50% off above prices
£6,700
£3,200
£800
£15,000
£7,310
£5,020
£3,300
£1,420
£5,000
£3,000
£1,000
£725