reason for this is because the new Euro IV Scania engine is a five-cylinder 9-litre EGR engine as opposed to its Euro III predecessor, which is a six-cylinder 9-litre engine. The chassis designation has also changed to N230UD or N270UD. 462 double-decker OmniCities were produced for London's bus operators, with London United and London Sovereign, then owned by Transdev, purchasing 206 OmniCities, while the East London Bus Group, the former operations of Stagecoach London owned by Macquarie Bank, purchased 174 OmniCities. London United donated their first double-decker OmniCity to the London Bus Museum in February 2022. Outside of London, many Go-Ahead companies purchased OmniCities, with Bluestar, Southern Vectis and Wilts & Dorset purchasing 61 as part of Go South Coast. 33 OmniCities were also purchased by Metrobus and Brighton & Hove. Articulated version The single-decker articulated (or "bendy bus") version of the OmniCity was first introduced in 1996. The articulated OmniCity built by 2006 was known as the CN94UA. In the United Kingdom, a demonstrator toured London in 2004, but failed to win any orders in place of the Mercedes-Benz Citaro. After other trials around the country, this bus was bought by Lothian Buses in April 2008, and then acquired by Nottingham City Transport after it left Lothian Buses in late August 2009. In 2005, Travel West Midlands ordered a batch of eleven articulated OmniCities, while First Greater Manchester placed eighteen in service, predominantly between Manchester and Bury. A batch of nineteen of high-specification artics also entered service with Cardiff Bus in 2006 on the high-profile 'Baycar' network. The Euro IV/V/EEV articulated version of the OmniCity was known as the CN280UA. In the United Kingdom, eleven were purchased by Menzies Aviation for use on shuttle services around Heathrow Airport, after purchasing ten on the previous chassis. Gallery See also List of buses East Lancs OmniDekka East Lancs OmniTown Competitors Wright Eclipse/Eclipse Gemini Alexander Dennis Enviro200/Enviro400 References OmniCity Double-decker buses Tri-axle buses Low-floor buses Articulated buses