Summer upgrade for ageing Hemel Hempstead gas mains

    10 July 2025

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    • Essential work in Hemel Hempstead will help keep residents connected to safe and reliable gas supplies for cooking and heating
    • The upgrade will involve the closure of Belswains Lane with diversions put in place
    • Work expected to last for five weeks

    Work is set to begin on Monday 21 July to replace ageing gas pipes in Belswains Lane, Hemel Hempstead, as engineers from Cadent, the UK’s largest gas distribution network, take action to secure safe and reliable gas supplies.

    The planned activity will involve the decommissioning of the current metallic gas pipes – which were originally installed in the 1940s - and installing tough new pipes which will last for decades, future proofing the Hemel Hempstead network.

    Following consultation with Hertfordshire County Council, Cadent has agreed to carry out this essential work between Monday 21 July and Monday 18 August, meaning most of the work is completed during the school summer holidays.

    The closure of Belswains Lane will take place from the junction of Belmont Road to the junction of Oliver Rise. Access will be made available to residents, but diversion routes will be in place for other motorists.

    Cadent Project Manager, Michael Wilson, said: “We have a responsibility to make sure every property that uses gas has access to it 24/7, 365 days a year and these essential works will mean that we continue to deliver on that promise.

    “We know it’s far from ideal to have any sort of road closure in place in what is a busy area, but we have worked hard with the local authorities to create a plan that keeps traffic flowing and maintains access for local businesses and residents.

    “We will be in regular contact with the Highways Authority to keep them updated on our work which we will always aim to complete as quickly and as safely as we can."

    Due to the nature of the work taking place, there will be times when the gas supply will be interrupted to properties along Belswains Lane. If you are a resident and your gas supply will be affected as part of this work, our team will contact you directly to deal with any enquiries. This will be for a short period only. Gas supply is usually restored on the same day it goes off.

    If you smell gas, always ring the National Gas Emergency Service immediately on 0800 111 999*, day or night. Do not assume it is related to this work; it may not be and needs to be checked.

    *All calls are recorded and may be monitored.

    Summer upgrade for ageing Hemel Hempstead gas mains

    Cadent

    Cadent is the UK’s largest gas distribution network with a 200-year legacy. We are in a unique position to build on strong foundations whilst encouraging the curiosity to think differently and the courage to embrace change. Day to day we continue to operate, maintain and innovate the UK’s largest gas network, transporting gas safely and protecting people in an emergency. Our skilled engineers and specialists remain committed to the communities we serve, working day and night to ensure gas reaches 11 million homes from Cumbria to North London and the Welsh Borders to East Anglia, to keep your energy flowing.

    Future of Gas:

    Here at Cadent we support the Government’s plans to reach Net Zero by 2050. That means we’re backing the introduction of hydrogen as a low carbon alternative to natural gas for the future. We know people love the controllability of gas and, with our network already in place, it makes sense to switch to the lower carbon alternative offered by hydrogen, which we believe can keep homes and businesses warm for generations to come.

    Cadent manages the national gas emergency service free phone line on behalf of the gas industry - 0800 111 999*

    Cadent Gas Ltd is owned by a consortium of global investors.

    *All calls are recorded and may be monitored.

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