Stagecoach often ordered ADL built vehicles, many of them took form of an ALX400 vehicle on a Trident Chassis. The Tridents were ordered for many routes, and almost all of the Double Deck routes in the Stagecoach fleet would have had a Trident on them at one point. Early Tridents were delivered with a different colour scheme to what they all carry today, they carried a grey moquette with red stripes (this interior is still found on 17001 today). In this picture we can see the current internal livery carried by most Stagecoach London Tridents. The Tridents ordered by Stagecoach came primarily with Voith gearboxes, with only about 84 ZFs delivered new. There have also been over 50 ZF retrofits, 30 outside London.
Like all vehicles the ALX400 eventually stopped production and there came a replacement, this was the Brand new Enviro400. Stagecoach got the first one built, a 10.8m Euro3 model called Spirit of London and numbered 18500, later 19000. This was to replace Trident 17758 which was destroyed in the 7th of July 2005 bombings. Their first full order came for 10 10.8m Euro4s for newly won route 61 which was due to operate from Bromley (TB) garage. But despite Stagecoach placing the order for the vehicles, they would not be the ones to take delivery of the vehicles. That was to be done by the Macquarie Bank, to whom Stagecoach had sold their operations to. But nonetheless Stagecoach made a triumphant return in 2010, and the Enviro400s were still there.
The ELBG didn't order much Enviro400s, but we'll get onto that later. But when Stagecoach returned they brought their ordering style back with them. Many routes were retained and Stagecoach brought Enviro400s for them. This was among Stagecoach's first order since their return to London and many people were looking forward to them. These batch of buses also had brand new Smartblinds installed on them, compared to the Manual blinds of the 61s batch and were Euro5, 10.1m models. Above 19860 can be seen on the 238.
Stagecoach didn't order much Enviro400 Diesels post 63reg, mainly because after that TFL wanted much more hybrids on London buses. Although there is a sole 14reg Enviro400 Diesel bus around, this is kept at TL as a bus used for the 136s extension to Elephant and Castle. This is one of about six Euro6 Enviro400s in London as of now (20/07/14).
Stagecoach also have quite a few Enviro400 Hybrids in their fleet, some being 61reg and others being 14reg. The 61reg buses had a different interior to the average Stagecoach interior. These had yellow handles and green seats. This was the interior used on all outer London hybrids and Stagecoach carried it in with the London ones. This batch was kept at Bow (BW) for route 15, which received the Hybrids mid-contract. Stagecoach didn't order much hybrids after this during 2012 and 2013. Although the next batch was due in 2014, for routes 54, 75, 122, 205 and 472. These buses contained the average Stagecoach London interior as Hybrids were going to become a common sight in London and there was no point differentiating between the two bus types.