In order to fulfill its scope and the requirements of its Members and Projects, TAHI has set up a number of Working Groups. These are formed as necessary and evolve over time. Current Working Groups are:

Technical Working Group (TWG) works to develop the TAHI Open Architecture (TOA) and work on Interoperability and Mark of Conformity (MoC) and to inform standards internationally. Included in the activities of the TWG the TOA work has a number of sub-groups associated with it

Commercialisation and Industry Sector Group works to promote and exploit the outcomes of TAHI activities. This group is has set up a number of Industry Sector Groups. More

Defined Groups that are currently not meeting are:

Market Intelligence Group (MIG) works to provide understanding and statistics on the market place. Included in the MIG work is a group working on Modelling the business and value case where many services are available to consumers, This work formed part of the input into the Trials and is now largely completed

Marketing Communications Group (MCG) works to deliver the promotional strategies of TAHI. (Marketing Communications is the Responsibility of Board Director, Mike Windsor and TAHI is now using "Ah Hoc" Groups to plan Conferences, Workshops and Seminars)