Over £90 million of investment to keep the energy flowing in North London and surrounding areas

in your area

  • Cadent spending over £90 million on new gas pipes in North London region
  • 390kms of ageing iron gas mains to be renewed across the region
  • Work will keep gas flowing for decades to come
Cadent, the UK’s biggest gas network, is investing over £90 million to upgrade 390kms of ageing metal gas pipes in the North London region this year (2017/18).

The company, which delivers gas to over two million homes, businesses and community facilities, across North London and parts of Berkshire, Buckinghamshire, Surrey and Essex, is replacing ageing metal gas mains with new hard-wearing ultra-tough plastic gas mains that will last for decades and require little or no maintenance.

Steve Mason, who heads up Cadent’s gas mains replacement programme in North London said: “Our job at Cadent is to keep the energy flowing to homes and businesses across the region.

“This major investment will help ensure that local people continue to enjoy safe and reliable gas supplies for cooking their meals, heating their homes and powering their businesses for decades to come.”

The announced figures are part of a major, nationwide programme to upgrade gas mains, developed in conjunction with gas industry regulator Ofgem and the Health and Safety Executive.

Teams from Cadent and contractors work closely with local authorities to schedule work to times that minimise inconvenience. Customer teams ensure letters are sent to every property affected by each project before work starts.

Near the start of work, they also knock door-to-door, to explain the work and learn if people have specific issues to accommodate.

If anyone has enquiries about gas mains replacement work in their area they can call the customer team on 0800 096 5678.

To find out more about how Cadent replaces gas mains and how that affects residents and businesses, see www.bettergaspipes.co.uk.

Breakdown of the 2017/18 gas mains replacement programme for the North London region by town/local area :
Town/Local area  Metres to be replaced in 2017/18
Acton 6514
Addlestone 1632
Amersham 1821
Ascot 1390
Ashingdon 1638
Barking and Dagenham 21134
Barnes 793
Basildon 7312
Beaconsfield 1832
Benfleet 1942
Billericay 5186
Bourne End 510
Bracknell 6392
Brent 9569
Brentford 310
Brentwood 1196
Buckinghamshire 354
Canvey Island 9321
Chadwell Heath 727
Chadwell St Mary 83
Chalfont St Giles 221
Chalfont St Peter 909
Chepping Wycombe 37
Chertsey 613
Chigwell 4366
Chingford 6546
Corringham 1844
Dagenham 934
Doddinghurst 607
Dunmow 55
Ealing 5268
East Sheen 1811
Eastcote 2268
Eastwood 604
Edgware 7476
Egham 636
Feltham 1867
Flackwell Heath 1113
Grays 7318
Great Missenden 121
Great Wakering 4538
Greenford 8979
Ham 148
Hanwell 5920
Harefield 2391
Harrow 3394
Havering 729
Hawkwell 1663
Hayes 9824
High Wycombe 10361
Hillingdon 334
Hockley 1637
Hornchurch 1780
Horndon on the Hill 183
Hounslow 10789
Hullbridge 1682
Hutton 1892
Hyde Heath 504
Ickenham 1971
Ilford 15845
Ingatestone 972
Isleworth 780
Iver 1031
Kew 501
Kingston Upon Thames 153
London 32910
Loughton 6591
Maidenhead 3933
Marlow 596
Mortlake 131
North Harrow 613
Northolt 614
Northwood 4331
Park Royal 350
Penn 39
Pinner 1046
Prestwood 1465
Purfleet 95
Rainham 3016
Rayleigh 2672
Rayners Lane 4879
Richmond 4316
Rochford 4005
Romford 14369
Ruislip 8453
Shenfield 2871
Slough 9267
South Harrow 3595
South Ockendon 1895
Southall 3811
Southend-On-Sea 54
Staines 12
Stanford Le Hope 1312
Stanmore 1115
Stanwell 4104
Stoke Poges 4806
Sudbury 12
Sunbury On Thames 402
Sunningdale 224
Thorpe Bay 28
Thurrock 3400
Totteridge 228
Twickenham 5746
Tylers Green 693
Upminster 1280
Uxbridge 1092
Walthamstow 1955
Warley 456
Wembley 4292
West Drayton 2400
West Ealing 697
West Thurrock 1808
Wexham 335
Whitton 186
Wickford 9043
Windsor 3663
Woking 94
Woodford Green 2053
Assorted remaining work across the areas 7914
Grand Total 390859
Cadent, formerly known as National Grid Gas Distribution, maintains, repairs and upgrades 131,000km of pipes across the North West, Midlands, the East of England and North London. 


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.

Media contacts

Ben Green


07773 122925