Gupworthy was originally intended as an intermediate station on the West Somerset Mineral Railway (WSMR), but neither the proposed extension to Heath Poult nor that to Joyce's Cleeve was built, leaving Gupworthy as the line's southwestern terminus. The WSMR was built primarily to carry iron ore from mines to Watchet harbour in Somerset, England. The line was unconnected to any other, though it passed under what is now the West Somerset Railway south of the village of Watchet. The station was located west of the top of the line's most striking feature - a three quarters of a mile, rope-hauled incline at a gradient of 1 in 4 (25%).

The West Somerset Mineral Railway was a standard gauge line in Somerset, England. Originally expected to be 13 miles 420 yards (21.3 km) long its length as built was 11+1⁄2 miles (18.5 km), with a 310-yard (280 m) branch to Raleigh's Cross Mine. The line's core purpose was to carry iron ore northwards from mines on the Brendon Hills to Watchet harbour on the Bristol Channel. From there the ore was shipped northwards to Newport where it was unloaded onto railway wagons and hauled to ironworks at Ebbw Vale. The line opened as intended in 1861. Passenger services commenced in 1865. The mines' and line's "period of prosperity" ended in 1875 and by 1883 all mining had ceased. The line lingered on for passengers and small goods until 1898, when it closed.