People travelling into Watford from Rickmansworth or Croxley Green could face major delays as work begins on the Metropolitan Line Extension.

Virgin Media, BT and Affinity Water are among the companies who will be re-routing their cables and pipes as builders prepare to start work on the viaduct on Watford Road. The work starts on Saturday, February 27.

This means motorists travelling from Rickmansworth or Croxley Green could face lengthy delays.

A lane will be closed on the roundabout between Baldwins Lane and Watford Road. There will only be one working lane in Baldwins Lane during the initial work, which starts on Saturday and will finish at the end of March.

The traffic management plans will be enforced between 9.30am and 4pm, but workmen are expected to be on site between 8am and 6pm.

A letter to residents from TFL states: “In preparation for building the new viaduct over Baldwins Lane and Watford Road, we must divert a number of utilities in the area.

“This will be undertaken in phases from Saturday, February 27 for up to six months, as the various utility companies undertake their work.

“The work involves excavating areas of the carriageway and footways in order to divert existing water, gas, electric and communications services.”