Which electricity DNO covers postcode HA3?

HA3 (Harrow) is distributed by UK Power Networks (London - LPN). For any street power cut call 105 free 24/7.

Who supplies mains water and gas in HA3?

Water: Thames Water; Gas network: Cadent Gas.

HA3 District Harrow (Greater London)

Live power cut, broadband, mobile 5G, water & gas network telemetry for UK postcode district HA3.

All / Power Broadband Mobile Water Gas

Electricity DNO (105)

UK Power Networks (London - LPN)

Emergency: 105 / 105 / 0800 316 3105

Water & Sewerage Company

Thames Water

Support: 0800 316 9800

Gas Network (0800 111 999)

Cadent Gas

Smell gas? 0800 111 999

Provider	Matched District / Area	Status / Affected	ETR / Updated
UK Power Networks (London - LPN)	E4 Walthamstow (Postcode E4) — UKPN INCD-647162-Z	2 properties	15 Nov 2026 at 5:02 am GMT
UK Power Networks (London - LPN)	EC1A Islington (Postcode EC1A) — UKPN MULT-5ec4d643-b635-4434-8faa-c085134c6…	DNO Active Fault	15 Nov 2026 at 2:02 am GMT
UK Power Networks (London - LPN)	EC1A Islington (Postcode EC1A) — UKPN MULT-4e9a26a1-8639-4930-8926-9efbd0ebb…	DNO Active Fault	15 Nov 2026 at 2:02 am GMT
UK Power Networks (South Eastern - SPN)	BR7 Bromley (Postcode BR7) — UKPN MULT-c591f918-e3e2-48c4-95f3-00fd1928d570	DNO Active Fault	15 Nov 2026 at 2:02 am GMT
UK Power Networks (London - LPN)	NW10 Brent (Postcode NW10) — UKPN MULT-1ff03ba8-8ef4-452f-a507-deced573da19	DNO Active Fault	15 Nov 2026 at 2:02 am GMT

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