Grand Junction Canal Nene at Northampton, to the turnpike road at Old Stratford (north-west of the modern Milton Keynes), and to Watford in Hertfordshire: those to Daventry and Watford were not built. The branch to Old Stratford was amended before it was built (see below). The branch to Northampton was delayed as the plans of the Leicestershire and Northamptonshire Union Canal to reach Northampton and thus join with the Grand Junction came to nothing. The link to Northampton was made by a tramroad transferred from Blisworth Tunnel, with the 5-mile (8-kilometre) canal from Gayton being opened in 1815. The link to Leicester was
Blisworth ore quarries were opened to the west of the village in about 1873,operating to the north of the Gayton Road until 1895 and south of the road from 1895 to about 1913. Horse Tramways connected these quarries eastwards to the canal and westwards to the railway. A new quarry operated to the south of these in 1942 and 1943 and between 1954 and 1967. This was the only iron quarry at Blisworth to use mechanical diggers. They were electric and diesel powered. The quarry was connected by standard gauge steam operated tramway to sidings on the railway at Gayton south