BR 906825 Flat ED
From SVR Wiki
Special Flat Wagon 906825 (telegraph type Flat ED) was built at Shildon in 1958.[1] These wagons were intended to transport large bulky loads, and were equipped with a flat timber floor and chaining down rings.
The SVRSevern Valley Railway’s 3 Flat ED wagons, 906811, 906825 and 906830, were bought from BRBritish Rail or British Railways by Universal Pictures and arrived on the SVRSevern Valley Railway in July 1975, being used as mock carriages in the film The Seven-Per-Cent Solution. The Flat ED wagons are owned by SVR(H).[2]
A more detailed history of the three wagons may be found under 906811.