Shortly before it opened to the public, the C&SLR gave notice of its intention to submit another private bill to Parliament, to construct a new line from its northern terminus at King William Street towards Islington. Because of the awkward arrangement of King William Street station, the extension was not to be connected directly to the existing running tunnels but was to be linked via a pedestrian subway through which passengers could make interchanges between the separate lines. The bill was rejected on the grounds that the extension failed to make a connection to the existing line. In November 1891, the C&SLR published details of a revised bill for the extension to Islington. The company had recognised the deficiencies of its King William Street station and, just a year after the line had opened, planned to construct a new pair of tunnels to bypass the problematic northern section.