There was no station at Irchester Junction on the four-track Midland Railway main line, where the branch connected with the Slow Lines only; the location was immediately south of the
River Nene bridge. The train service ran from Higham Ferrers to Wellingborough, consisting of six trains each way at first, increasing to ten by 1901. The arrival of the railway encouraged development in both Higham Ferrers and Rushden, and populations increased, but Rushden started with a larger population and maintained that advantage. The concentration in Rushden of large industrial employers in a town of moderate size encouraged co-ordinated annual holiday breaks and in 1934, one of Rushden's leading shoe manufacturers chartered three special trains to take more than 1,000 employees and their families to
Brighton for the day. These works specials continued after
World War II. Wellingborough was the local main commercial town locally, but the station in Wellingborough is not conveniently sited for the town, and when local bus services became available in the 1930s and afterwards, passenger usage on the branch declined steeply. In the summer of 1952 British Railways started a
through service from Higham Ferrers to
Leicester. This brought the sight of a large passenger locomotive with a long train on the branch on a regular basis. However the through train did not work back to Higham Ferrers; passengers had to return on the ordinary service trains and change at Wellingborough. Then in 1954 the usual steam-worked branch train was replaced by a three-coach
diesel multiple unit, but this seems to have been unsuccessful and steam operation was reinstated. ==Decline and closure==