NIR Mk.2b SO 823 NIR Maroon/Blue DB Original 5-rib body style with

Original 5-rib body style with roller bearing axle boxes

and future expandability

Three styles of windscreen: standard

These locomotives all exhibit differences to the home fleet class 66 that we are familiar with

NIR Mk.2b SO 823 NIR Maroon/Blue DB Original 5-rib body style withBuilt at Litchurch Lane, Derby, in 1970, eight examples were constructed for Northern Ireland Railways for its new Enterprise service between Belfast and Dublin. This landmark service featured a range of bespoke vehicles that were quite unlike anything then in operation in Irelandor indeed on British Raildespite being a derivative of a BR design. The eight Mk. 2b coaches acquired by the newly formed Northern Ireland Railways (NIR) included several new