Air brokers/air charter	On-line bookable tour operators
Air taxi operators	On-line bookable travel agents
Airlines (scheduled)	Reservation offices
Airport car parking	Tour operators
Airport services	Tourist boards - national (Overseas)
Airports	Tourist boards - national (UK)
Car Rental	Tourist boards - regional
Conference & incentive organisers	Trade associations & societies
Cruise operators & agents	Travel & technology services
Ferry operators & agents	Travel & tourism courses
Flight only & airlines consolidators	Travel agents
Incoming tour operators	UK & Overseas railways
Insurance	UK holiday operators
Irish travel agents & organisers	Worldwide attractions & ticket agents