Global Business Travel Association: formerly the NBTA (National Business Travel Association) and renamed in February 2011. It provides its members (business travel management professionals) with education and information

The Hotel Booking Agents Association: The trade association that represents the collective interest of those involved in the procurement and management of conference, meetings and accommodation in the UK and internationally. Some 80 booking agents and 280 venues and hotels are members of the organisation, which has a buying power in excess of £2.3 [..]

Revenue Passenger Kilometre - a measure of airline passenger traffic

Universal Air Travel Plan - a corporate payment network privately owned by 17 of the world's major airlines.

World Travel and Tourism Council

Board of Airline Representatives in the UK: The industry association for scheduled airlines undertaking business in the UK. It represents 86 scheduled airlines in the UK in their dealings with government, government departments, regulators and airport operators. www.bar-uk.org

British Air Transport Association is the trade body for UK-registered airlines. The 10 member airlines are: Bmi, British Airways, DHL, Easyjet, Flybe, Jet2.com, Monarch, Thomas Cook, Thomson Airways and Virgin Atlantic.

A system whereby instead of a traveller settling directly with a travel supplier (ie: paying a room bill on departure), the hotel sends the bill directly to the TMC to settle, and is the reimbursed in turn by the corporate client.

Brazil, Russia, India and China - the major emerging economies of the world

Billing and Settlement Plan - a system used by IATA-accredited passenger sales agents to allow the selling, reporting and remittance of air ticket sales