BA has signed a full contents deal with a third GDS Worldspan.
The three year agreement gives the GDS, now owned by Travelport, "preferred channel" status in return for full access to the airline's inventory.
Agents in the UK and Ireland using Worldspan will be able to join an opt-in programme to gain access to the full range of BA fares.
The deal is similar to ones signed by the UK carrier with Galileo and Sabre in the previous two weeks.
While no details of the deals with Sabre or Worldspan have been released, the agreement with Galileo, the largest GDS in the UK and Ireland, imposed a surcharge by the airline of 50p per segment on first, business and economy fares and£1 per segment on its cheaper fares.
Tiffany Hall, BA head of marketing and distribution, said: "This new deal will reduce the airline's distribution costs and ensure that our lowest fares can continue to be distributed through World span's travel agents."
The deal leaves Amadeus as the only major GDS not to have reached agreement with BA.
The airline has given GDSs until April 10 to sing up into an opt-in programme similar to the ones runs by Galileo, Sabre and Worldspan.
If there is no deal with a GDS, the airline has said it will impose a £3 surcharge on all bookings made in the UK and Ireland.
Two years' growth for UK hotels
Britain's hotel industry is set to grow by 8% over the next two years, consultants PKF have predicted.
In the Hotel Britain 2007 report, the analysts say that 23,000 more rooms will be added to the UK stock, bringing the total to more than 320,000.
PKF said there had been "explosive growth" in 2006 in Britain's budget hotels with 3,600 extra rooms.
But the growth in 2008/2009 is likely to be in both the luxury properties as well as in the budget brands.
Robert Barnard, hotel consultancy partner with PKF, said there would be luxury growth in London, Edinburgh and Glasgow.
He said: "There is increasing competition in the UK hotel market with hoteliers recognising the need to provide their customers with different levels of service and pricing.
"As competition intensifies, product differentiation is increasing in the limited service segment, with new brands ranging from 'luxury budget', to functional and very affordable products.
"For the first time in many years, we're seeing true innovation in the industry with the introduction of new hotel concepts."
Mr Barnard added: "Hotel customers are already benefiting from a broader range of the types and prices of
rooms available and that trend is set to continue.
"The extent of growth is making this an incredibly exciting time for the industry and the future is very bright."
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