Which electricity DNO covers postcode HP4?

HP4 (Berkhamsted) is distributed by UK Power Networks (Eastern - EPN). For any street power cut call 105 free 24/7.

Who supplies mains water and gas in HP4?

Water: Affinity Water; Gas network: Cadent Gas.

HP4 District Berkhamsted (Hertfordshire)

Live power cut, broadband, mobile 5G, water & gas network telemetry for UK postcode district HP4.

All / Power Broadband Mobile Water Gas

Electricity DNO (105)

UK Power Networks (Eastern - EPN)

Emergency: 105 / 105 / 0800 316 3105

Water & Sewerage Company

Affinity Water

Support: 0345 357 2407

Gas Network (0800 111 999)

Cadent Gas

Smell gas? 0800 111 999

Provider	Matched District / Area	Status / Affected	ETR / Updated
Andrews & Arnold (AAISP)	SG12 VoIP: Possible problems with some VoIP calls	Network Anomaly	15 Nov 2026 at 7:02 am GMT

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