Braunston Tunnel ft (2.13 m) beam boats to pass. There are three air shafts along its length. The tunnel passes underground alongside another Grand Union Canal feature, Drayton Reservoir, from which the feeder enters the canal at the east end of the tunnel. Braunston Tunnel Braunston Tunnel is on the Grand Union Canal about 830 yds (760 m) east of Braunston, Northamptonshire, England top lock. It is in the northern outskirts of Daventry, about 2 km east of the village of Braunston. Braunston Tunnel is 2,042 yards (1,867 m) in length. Built by Jessop and Barnes, the tunnel has no towpath and
Eyre's Tunnel passes above the tunnel. Eyre's Tunnel Eyre's tunnel or Lisson Grove Tunnel is a short canal tunnel on the Regent's Canal that passes under Lisson Grove in St John's Wood, north London and opened in 1816. It is only 48 metres long. The two other tunnels on the Regent's Canal are Islington Tunnel and Maida Hill Tunnel. Unlike the other tunnels, Eyre's Tunnel has a (now fenced) towpath. The tunnel was originally known as Eyre's Tunnel due to its passing beneath land belonging to Richard Eyre, a local landowner. Lisson Grove is a more recent usage clearly following the renaming