The line opened for traffic on 1 November 1856; the train service was four trains each way daily; the Great Northern Railway had agreed to work the line for 50% of gross income. The line ran to Essendine station on the GNR main line; the junction faced northwards there. There were no intermediate stations, and the line was single; Stamford passenger trains used a
bay platform at Essendine. At this period the small town of
Bourne also sought a connection to the Great Northern Railway. The
Bourn and Essendine Railway was incorporated by an act of Parliament, the
Bourn and Essendine Railway Act 1857 (
20 & 21 Vict. c. cxii), of 12 August 1857, with capital of £48,000. S&ER receipts for the half year ending December 1858 were reported to be £1,418. This was considered satisfactory, and encouraged the directors, led by the Marquis of Exeter, to plan the provision of double track. The formation had been made for double track, and a second track was quickly laid, except for a distance of 400 yards approaching Essendine: there was not enough space close to the junction with the GNR. Nevertheless the Board of Trade were requested to inspect the line for opening as a double track, even though the second track was not connected at Essendine, and no signalling had been provided for it. The directors were unable to state what method of safe working they proposed. The Board of Trade inspecting officer made three further visits in 1859; in every case he was unable to authorise opening of the second track, and eventually it was removed, and the proposal forgotten. The
Bourn and Essendine Railway opened for traffic on 16 May 1860, with intermediate stations at Braceborough Spa and Thurlby. Its junction at Essendine also faced northwards, like the S&ER junction, but on the east side of the GNR main line. It had been contemplated that through trains could be run from Stamford to Bourne and on to
Spalding. However the junctions at Essendine were such that the Stamford line and the Bourne line entered bay platforms on their respective sides of the GNR main line, and through running would have involved a backshunt crossing all the GNR tracks. That was ruled out by the GNR as unsafe and likely to cause delay to main line running. An alternative proposed was for the Bourne line to enter Essendine from the south directly to the S&ER platform, but it would still need to cross all the GNR lines, and that too was unacceptable operationally. ==Sibson extension==