For instance, London buses are carrying ads for FilmOn.com, a new download service.
Adverts encouraging people to invest in east Kent are appearing on London buses and at underground stations.
It was due to run on London buses as a response to an advertising campaign by gay rights group Stonewall.
Perusing our gallery, you'll find London buses looking slightly pink and black fencing shading toward a dark (deep?) purple.
Passengers must buy their tickets in advance, or from a machine, rather than from the driver as in most London buses.
ECONOMIST: Why mourn creaky old buses when you can welcome new ones
The Liberal Democrats promise to "increase capacity on the Tube, the train and London buses, real measures to help keep fares down".
Equally, a portrait of Britain that hopes to discover national character in London buses, Marmite soldiers and faded celebrities risks being glib and shallow.
By the end of 2012, London buses will also accept contactless payments, followed by the Tube and the rest of the transport network in the Capital in 2013.
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London buses are to start accepting contactless payments from Thursday.
The Thames Tideway Tunnel will be the width of three London buses and will run for 20 miles from west to east London, connecting up the 34 of the most polluting sewer overflows.
The experiment was hailed a success by the companies involved, but although you can now use NFC credit cards on London buses, there is no sign yet of travellers being allowed to swipe in via their phones.
The concept is not that fanciful: after all, fluid-coupling flywheel devices, where a confined liquid does the job normally done by two abrasive discs as in a conventional clutch, have been used in many vehicles, including traditional London buses.
The same determined streak has also brought London more buses.
Passenger watchdog, London TravelWatch, also called for more buses for outer London, making streets more pedestrian-friendly and the removal of gyratory systems and one-way roads.
Johnson promises more than 1, 600 hybrid buses for London by 2016 (330 are driving now).
The advertisements will run on 200 bendy buses in London and 600 vehicles in England, Scotland and Wales.
Both runways at Heathrow airport were closed while public transportation in London -- including all buses -- was brought to a near standstill.
The spending watchdog also said issues related to cutting journeys on buses and the London Underground by non-Games users by an average of 13% a day - rising to 30% on peak days - still had to be resolved.
BBC: London 2012 at risk of exceeding budget, watchdog warns
Buses replaced trains to London as far as Three Bridges and services from Lewes were also affected.
On Monday afternoon large gangs roamed Peckham and Hackney in east London, looting shops, attacking buses and setting cars and shops alight.
London Midland passengers were advised to use buses where ticket acceptance is available.
The British Humanist Association said the buses carrying the slogan outside London would operate in Manchester, Birmingham, Glasgow, Edinburgh, York, Leeds, Newcastle, Dundee, Sheffield, Coventry, Devon, Liverpool, Wolverhampton, Swansea, Newport, Rhondda, Bristol, Southampton, and Aberdeen.
It is also true that London's new single-decker bendy buses, which are widely used on the continent (they hinge in the middle and therefore go round corners easily) are foreign, and therefore to traditionalist tastes unwholesome and unwelcome.
ECONOMIST: Why mourn creaky old buses when you can welcome new ones
"Services between London Paddington and Tiverton Parkway are running and buses are replacing train services between Tiverton Parkway and Exeter, adding at least an hour to your overall journey time, " a First Great Western spokesman said.
There are currently eight prototype buses being used across the streets of London, built by firm Wrightbus.
It will work in a similar way to the Oyster Card system in London, and will be used on trains, buses, ferries, subway and trams.
The low emission zone - which begins in February 2008 - aims to deter the most polluting vehicles from being driven in central London by imposing charges on lorries, coaches and buses that fail to meet low emission standards.
Transport for London follows Stagecoach which began installing NFC equipment on its buses in 2009.
London came to a near standstill on Monday with all buses canceled and overground and underground train services severely disrupted.
The mayor of London has said he hopes a Ballymena bus company can provide buses for the city over the next four years.
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