President Obama would have to visit London first, before setting foot in Northern Ireland.
Setting a fee for roadworks was the only way to reduce disruption, according to London First.
London First created a working group in October 2011 to examine the case for the new rail link beneath central London.
BBC: Crossrail 2 stations proposed by London business leaders
London First, a business organisation, says that three-quarters of the companies it surveyed in London believed that the charge was working well.
Even London First, representing business interests, which in the past has been supportive, recently called on the mayor to provide better leadership.
Witnesses include the CBI, the British Chamber of Commerce, the Institute of Directors, London First and a good geographical spread of airport operators.
Allen and Overy is offering staff in London first refusal on filling the jobs and if they choose not to relocate, they face losing their jobs.
Lady Jo Valentine is the chief executive of London First, an organisation which campaigns on behalf of most of the capital's biggest companies and employers with the aim of improving the city's competitiveness.
According to a survey for London First, a business organisation, 59% of firms term the charge's impact on London's economy as positive or neutral, compared with 26% who say it has been negative.
Two Years later he was in London presenting first Sportsview and then Grandstand.
London Underground and Virgin Media have named the first London Underground stations that will be WiFi enabled for free this summer.
ENGADGET: Virgin Media names the first 80 tube stations to get WiFi hotspots
The first Act passed by the Assembly, the first visit by the Welsh government and the Assembly to the Supreme Court in London, the first woman elected to lead Plaid, the first tranche of the Silk Commission's work done and - they hope - not left on a shelf to be dusted in years to come.
In 2000, he ran his first London marathon and went on to compete in a further eight marathons.
Mr Verwer said London Midland had first identified it would have a shortage of drivers during the summer.
The Bromley By Bow health centre in east London was the first practice Andrew Lansley visited as health secretary.
There is thus less to the London agreement than first meets the eye.
Vladimir Putin visited London on his first official trip to the West since being elected Russia's president in March.
Team GB has won its first London 2012 medals, with cyclist Lizzie Armitstead taking silver in the women's road race.
Camden says it is the first London council to propose the changes and will decide on implementing them in January.
This was particularly important for London as the first Games to make real-time results available across all sports and onto mobile devices.
They claim to be London's first floating herbal apothecary in 350 years.
Playwright Jez Butterworth is returning to the Royal Court theatre in London for the first time since the success of his award-winning play, Jerusalem.
If you fancy something more lively, AKA (18 West Central Street, Holborn) was one of London's first DJ bars and it still knows how to party.
The IOC said female participation at the first London Games in 1908 was 1.8% of all competitors, increasing to 9.5% when the UK capital was next host in 1948.
Tom Ford International now encompasses 19 freestanding stores in 17 countries, with a new flagship store recently opened in Beijing and the first London store set to open in the fall.
It was with his financial nous that the brothers were able greatly to expand their interests beyond Le Gavroche in Mayfair, the first London restaurant ever to acquire three Michelin stars.
Ken Livingstone, London's first mayor, partially pedestrianised Trafalgar Square.
ECONOMIST: London��s public spaces have got better, but not good enough
London (CNN) -- Nearly four decades after he brought an invasion of mutant, flesh-eating rodents to London with his first novel, "The Rats, " UK chiller writer James Herbert has died aged 69.
The longer-term danger, which is no less acute for being unmeasurable, is that the young financier from Madrid, Manhattan or Mumbai will decide not to come to London in the first place.
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