An energy operator is to extend the life of a gas field off the East Anglian coast with a £75m investment to drill a new well.

Spirit Energy hopes to bring a further 50 billion cubic feet of gas on stream in the Chiswick field in the southern North Sea (SNS).

The Chiswick field is part of Spirit Energy's Greater Markham Area, which also includes the Markham, Grove and Kew fields. Combined, the Greater Markham Area fields produced 23 billion cubic feet of gas for Spirit in 2017.

Fraser Weir, North Sea director at Spirit Energy, said: "Having already produced billions of cubic feet of gas since coming on stream 11 years ago, we are delighted that the hard work and collaboration of our teams in both the UK and the Netherlands has led to us continuing our investment in the Chiswick field and extending the life of a key part of our portfolio."

The well will be the first drilled in the field since 2010.