The Secretary General, Dr. Andrew Skinner, is based there. Janet Goldson is the IAH Administrator who deals with all enquiries on membership and member services. You can get in touch directly by using the Contact IAH navigation button at the top left of every page. Includes a list of working groups and who is involved in each one. Some Commissions and Working Groups have links to separate web sites or discussion pages.
Some national chapters collect subscriptions locally.
See the Membership pages for details.