The Olympus was launched by East Lancashire Coachbuilders in November 2006.[3] The first example, built on a Volvo B9TL chassis for Delaine Buses, was displayed at Euro Bus Expo 2006. It had been the intention to exhibit a higher specification model for Ham's of Flimwell, but this was not ready in time for the show, meaning the bus didn't show its full potential.
The Olympus replaced the OmniDekka on Scania chassis (though was still sold alongside the bus until 2011), which is 10.6 or 11.9 metres in length. On Volvo chassis, it replaced the Myllennium Vyking and the Myllennium Nordic. On Alexander Dennis chassis, it replaced the Myllennium Lolyne.
At the beginning of January 2007, Reading Buses ordered six Olympus with Scania chassis for their Loddon Bridge FastTrack park and ride contract to replace Optare Excels. They entered service in a yellow and blue livery in July 2007.
In London, some bus operators purchased Olympus with Scania chassis. Transdev London and Metroline had these buses operating on routes 148, 7, 90 and 297 respectively. Due to problems with the new Transport for London specified air-conditioning units, some buses failed the tilt test by one degree, and entered service late.
The first buses to be delivered under the Darwen name were those ordered by Cardiff Bus (one of which was shown at Coach and Bus live 2007) and Arriva Yorkshire.
Reading Buses has numerous examples bodied by Darwen, in addition to a few built by East Lancs before they went into administration.
In 2009, Optare announced that it had designed its own chassis for the Optare Olympus, with a Mercedes-Benz engine, as per previous products.[4] A single prototype integral Olympus, designated the Olympus O1030, was built; this later became the basis for the new Optare MetroDecker and was subsequently launched in 2014.[5]