The NBR J Class (LNER Classes D29 & D30), commonly known as the Scott class, were a class of 4-4-0 steam tender locomotives designed by William P. Reid for the North British Railway. They passed to the London and North Eastern Railway at the grouping in 1923. Forty-three were built, of which thirty-five (ten D29s and twenty-five D30s) survived into British Railways ownership in 1948.