The model has been dubbed "Boris Bus" after London Mayor Boris Johnson, seen here on the platform [GALLO/GETTY]

London has welcomed a new open-backed double-decker bus, six years after the much-loved but ageing fleet of "Routemaster" vehicles were removed from the streets of the British capital.

The distinctive snub-nosed red Routemasters, popular with tourists and locals alike and as synonymous with London as Big Ben and Buckingham Palace, were almost totally withdrawn in 2005 because they were regarded as expensive relics of the past.

The sleek new modern bus, which also features a conductor and the distinctive open rear boarding platform to allow people to jump on and off, was unveiled for the first time on Friday, gliding through busy traffic on its first trip through London.

Beaming London Mayor Boris Johnson, who had promised a modern Routemaster in his 2008 election manifesto, said he believed the new design would become as resonant worldwide as its predecessor.

Such is the international attraction of the bus that reporters from across the globe gathered in a chilly Trafalgar Square to see Johnson show off the "Boris Bus" as it has been dubbed.

"I think the magic thing about this bus is that domed appearance that it has," he told reporters, before launching into the flowery prose for which he is renowned.

"It reminds everybody of all those things that are iconic of London -- the design of an old taxi, or the design of a bowler
hat, or the noble domed brow of a battle elephant.

"That's the thing that says London to loads of people. Just going along the streets just now it's been obvious how many people like it and what an eye-catching thing it is."

'Shiny vanity project'

The new buses are based on the iconic Routemaster, which last ran in 2005 [GALLO/GETTY]

The original Routemasters were introduced in the capital in 1956 but production stopped in 1968. Some 2,760 trundled through London at their peak, and featured in countless films such as the 1963 Cliff Richard film "Summer Holiday".

The first eight new prototypes, designed and built in Britain, will operate from next February on the number 38 route
between Victoria rail station and Hackney in east London.

Hundreds more are expected to be brought in if the trial is deemed successful.

However, not everyone is delighted to see the new look Routemasters, with Labour Party opponents saying Londoners would pay for Conservative Johnson's "shiny vanity project".

They argued it was wrong to spend 11 million pounds on designing and building the initial buses when fares were rising and money was tight amid Britain's economic difficulties.

The cost of a conductor alone would add 72,000 pounds per bus every year, they said.

Johnson was unbowed. "People who reject this bus ... have to answer a very simple question. Do they want a bus that is cleaner and greener ... that is built in Britain and delivers British jobs?" he said.

"Or do they want to go back to a German made bus that is not suitable for the streets of our city."

Source: Reuters