Grand Union Canal

The Grand Union Canal is a major waterway in England that links London with the Midlands. It runs north-west from Brentford on the River Thames through Hertfordshire and on to Birmingham and Leicester. The canal has two main branches: one heads to Birmingham with 166 locks over 137 miles, while the other goes to Leicester through a mix of narrow and wide sections. Short arms branch off to towns such as Aylesbury, Northampton and Welford. It connects with other canals and rivers including the Regent’s Canal, the Oxford Canal and the River Soar. The canal was formed in 1929 when several waterways merged to compete with rail and road transport. The Regent’s Canal bought the Grand Junction Canal and other routes, while the Leicester line had earlier joined the system in 1894. A key modernisation in the 1930s widened locks between Napton and Birmingham so widebeam boats could pass. The Duke of Kent opened the new broad locks at Hatton in 1934, though improvements stopped short of London. North of London the canal winds through the Chiltern Hills and Hertfordshire countryside. It passes through Croxley, Watford and Kings Langley, skirting Cassiobury Park and crossing under the M25. The towpath offers long walks through villages and parkland, while the waterway itself carries leisure boats, anglers and occasional freight. The Paddington Arm branches off near Bulls Bridge, heading north to Little Venice, adding to the network’s quiet charm.