Blisworth Tunnel sections lined with pre-cast concrete rings. It was also used to test out the materials that were later used on the Channel Tunnel. An unused ring is on display near the south portal. Blisworth Tunnel Blisworth Tunnel is a canal tunnel on the Grand Union Canal in Northamptonshire, England, between the villages of Stoke Bruerne at the southern end and Blisworth at the northern end. The northern end is about from the northern end of the Grand Junction Canal at Braunston, Northamptonshire and the southern end about . At 3,076 yards (2,813m) long it is the third-longest navigable canal tunnel
Berwick Tunnel byelaw was introduced which stated that whoever reached the centre first should continue, whilst the other boat would have to turn back. Today the canal is disused, and the tunnel remains, though the ends have been bricked up. Berwick Tunnel Berwick Tunnel is a canal tunnel located on the Shrewsbury Canal, Shropshire, England, UK. The Shrewsbury Canal connected Shrewsbury to the Wombridge Canal, and provided a way to supply the people of Shrewsbury with coal at reasonable prices. The route between Shrewsbury and Wappenshall was relatively flat, although beyond Wappenshall, nine locks and a large inclined plane were needed to