ACE International Association for Conferences and Events, UK personnel association providing central source of information on various aspects of conference, exhibition and event organization. [www.martex.co.uk]

Air Transport Users Council Established in the UK first by the Civil Aviation Authority (CAA) under the terms of the Civil Aviation Act 1971 as the Airline Users Committee. Makes reports and recommendations to the CAA for furthering the interests of users of air transport and investigates complaints against airlines. [www.auc.org.uk]

Air Travel Trust Fund (ATTF) Part of the UK Civil Aviation Authority (CAA) ATOL consumer protection system. All tour operators offering package holidays by air must hold a licence from the CAA and provide a bond. If the operator fails, the CAA uses the bond to pay people abroad and reimburse anyone who has bought a holiday. The Air Travel Trust Fund makes up any shortfall. [www.caa.gov.uk]

Alliance of Retail Travel Agency Consortia (ARTAC) Voluntary British consortium of 770 independent ABTA travel agents (2001) formed 1975 to enable its members to compete with the multiples, all of which brand their agencies as Worldchoice agencies.