History
With competition from the railways having taken a large share of traffic in the second half of the 19th century, improvements in roads and vehicle technology in the early part of the 20th century meant that the lorry was also becoming a threat to the canals. Tolls had been reduced to compete with the railways, but there was little scope for further reduction. The Regent's Canal and the Grand Junction Canal agreed that amalgamation and modernisation were the only way to remain competitive. The (present) Grand Union Canal came into being on 1 January 1929, extended in 1932. It was formed from the amalgamation of several different canals: At 286.3 miles (461 km) it is by far the longest canal in the UK.
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