A brand new batch of Tridents entered service on the Oxford - Bicester services. 18394 (KX55TLN) is seen in Bicester in July 2006.
Stagecoach Oxford Trident 18394 again in Oxford in late May 2008.
As only Stagecoach can, the country services into Oxford were heavily marketed with S-branding as seen on the rear of Dennis Trident 18199 (KN54ZXP) in February 2011.
Stagecoach Oxford's initial Enviro400 doubledeckers were on Scania N230UD chassis, like 15435 (KX08KZM) seen in the city in May 2008.
The same bus is seen again two years later with S-branding and having had wifi installed as part of the promotion of the S-routes.