Royal Mail

Royal Mail Group plc is a postal service and courier company in the United Kingdom.

In 2011, they released several stamps with images from the Thomas & Friends franchise to celebrate the centenary of the Reverend W. Awdry.

Thomas & Friends
These stamps featured a still from an episode of the show showcasing a particular character.
 * Thomas in Thomas in Trouble
 * James in James Gets a New Coat
 * Percy in Percy and the Left Luggage
 * Daisy in Bulls Eyes
 * Toby in Henry's Forest
 * Gordon in Tender Engines

The Railway Series
An illustration from the Railway Series was featured on each of these stamps, with a related quote underneath. These stamps were printed with an illustration from Tenders and Turntables (Troublesome Engines) surrounding them as a background.
 * Thomas and Bertie (Tank Engine Thomas Again)
 * Dirty Objects (Toby the Tram Engine)
 * Percy Takes the Plunge (The Eight Famous Engines)
 * The Sad Story of Henry (The Three Railway Engines)

Hornby
In 2011, also in celebration of the Reverend Awdry’s centenary, Hornby re-released three engines for their Royal Mail Thomas & Friends Stamp Collection; each engine came with their respective television series stamp.

Engines

 * Thomas
 * James
 * Percy