At least three builders' engines were used for building the line. Unusually, some of the temporary track was wider than the final gauge - the section around Parracombe Bank for example, crossing the Heddon valley, was built to gauge, with an engine known as "Winnie". A fifth engine - perhaps named "Spondon" - may also have been used, although little is known of either of these. In 1900, "Kilmarnock" was sold by the L&B. It is thought that it was left behind by James Nuttall, because of the financial problems and legalcase between the railway and the builder.