Summer holiday project: New gas mains for Hemel Hempstead

Essential work will help make sure local residents keep on enjoying safe and reliable gas supplies for cooking and heating

07 Apr 2017


▪       Ageing gas mains to be replaced in Lawn Lane and Deaconsfield Road

▪       Work will involve a lane closure and take place in school summer holidays to minimise disruption

▪       Project will help ensure local people continue to enjoy safe and reliable gas supplies for cooking and heating



Engineers are preparing to replace ageing gas mains in Hemel Hempstead during the school summer holiday period.


Work to replace ageing metal gas mains with tough new pipes in Lawn Lane and Deaconsfield Road is due to begin on Monday 31 July 2017 and is currently scheduled for completion by Friday 25 August 2017.


The work will involve a lane closure in Lawn Lane heading toward the town centre between the junctions with St Albans Hill and Deaconsfield Road. Temporary four way traffic lights will be installed and a signed diversion will also be in place via Lawn Lane, St Albans Road and St Albans Hill. The lane closure is required to enable the work to be carried out safely and efficiently.  Currently it is scheduled to be in place between Monday 31 July and Friday 18 August.


National Grid Authorising Engineer Dilbir Chana said: “This vital project will help make sure that the local community keep on enjoying safe and reliable gas supplies for cooking and heating in the future.” 

He added: “We’ve carefully planned the work in discussion with the local authority to try and keep any disruption to a minimum.

“Steps we’ve taken include scheduling some of the work during the school summer holiday period when roads are generally quieter.

“We’ll also be inserting the new mains wherever possible which will reduce the number of large excavations we need to dig and any associated traffic disruption.”

The project will also involve replacing gas service pipes to some properties. To do this project engineers will need to temporarily disconnect the gas supplies to the properties involved. National Grid will contact those properties involved to arrange access.

 All National Grid engineers carry official identity cards, which people should ask to see before allowing them on their property. To verify an engineer’s identity or for any enquiries about the project people should contact National Grid’s customer services team on 0800 096 5678.

To find out more about National Grid‘s gas mains replacement work go to


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Notes for editors

National Grid Gas Distribution Ltd

National Grid Gas Distribution 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. 


National Grid Gas Distribution manages the national gas emergency service free phone line on behalf of the gas industry - 0800 111 999 (All calls are recorded and may be monitored).

National Grid Gas Distribution Ltd is majority owned by a consortium of global investors composed of Macquarie Infrastructure and Real Assets (14.5%), CIC Capital (10.5%),

Allianz Capital Partners (10.2%),  Hermes Investment Management (8.5%), The Qatar Investment Authority, (8.5%), Amber/INPP (4.4%) and Dalmore Capital (4.4%).  National Grid plc retains a 39% stake [Following the sale of the majority stake completed in March 2017

Notes to Editors:

National Grid is one of the largest investor-owned energy companies in the world and was named Responsible Business of the Year 2014 by Business in the Community. This accolade acknowledges all of our efforts in getting involve with the things that really matter to us and to society. We own and manage the grids that connect people to the energy they need, from whatever the source.  In Britain and the north-eastern states of the US we run systems that deliver gas and electricity to millions of people, businesses and communities.

In Britain, we run the gas and electricity systems that our society is built on, delivering gas and electricity across the country.  In the North Eastern US, we connect more than seven million gas and electric customers to vital energy sources, essential for our modern lifestyles.

National Grid in the UK:

  • We own the high-voltage electricity transmission network in England and Wales, operating it across Great Britain
  • We own and operate the high pressure gas transmission system in Britain
  • We also own a number of related businesses including LNG importation, land remediation and metering
  • Our portfolio of other businesses is mainly concerned with infrastructure provision and related services where we can exploit our core skills and assets to create value. These businesses operate in areas such as Metering, Grain LNG Import, Interconnectors and Property. National Grid Carbon Ltd is a wholly owned subsidiary of National Grid. It undertakes Carbon Capture Storage related activities on behalf of National Grid.

Find out more about the energy challenge and how National Grid is helping find solutions to some of the challenges we face at

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