This was followed by the opening of a second branch line in 1863 - the Conwy Valley Line - which headed south and was built by the Conway and Llanrwst Railway, and became part of the LNWR in 1867.
Three of the platforms on the southern side (both bays and the down loop) were taken out of use in 1968 when the easternmost of the two signal boxes was closed and the track layout altered.