St. Dunstans was built in this location as a transfer station so that passengers travelling east / west could change trains without entering Bradford Exchange.

The triangle was used to turn whole trains (steam locomotives and coaches) to enable them to run boiler first from Bradford Exchange railway station.

[4] This practice continued until 1972 (when the lines were closed through St Dunstans) if a DMU needed turning, usually because it could not be driven from one end.

[7] The branch veered off the old line to Thornton at Horton Park railway station and usually consisted of coal being forwarded from Laisterdyke goods yard.

[15] In 1947, the LNER timetable shows St Dunstans had 14 departures westwards towards Queensbury, with most travelling to Halifax railway station and the rest going to Keighley.