HORNBY TT BR Mk1 Composite Corridor E15459 - Era 5HORNBY TT BR MK1 COMPOSITE CORRIDOR E15459 ERA 5 Product Info Upon nationalisation in 1947 the newly formed British Railways saw the need to standardise their passenger stock, having inherited a patchwork of coaches of all different specifications from each of the big four who were in turn sometimes running a wide variety of stock from their constituent companies. This new coach would have to be perfect for every possible use that the new BR may need