Which electricity DNO covers postcode LL17?

LL17 (St Asaph) is distributed by SP Energy Networks (Manweb - SPM). For any street power cut call 105 free 24/7.

Who supplies mains water and gas in LL17?

Water: Welsh Water (Dŵr Cymru); Gas network: Wales & West Utilities.

LL17 District St Asaph (Denbighshire)

Live power cut, broadband, mobile 5G, water & gas network telemetry for UK postcode district LL17.

All / Power Broadband Mobile Water Gas

Electricity DNO (105)

SP Energy Networks (Manweb - SPM)

Emergency: 105 / 105 / 0800 001 5400

Water & Sewerage Company

Welsh Water (Dŵr Cymru)

Support: 0800 052 0130

Gas Network (0800 111 999)

Wales & West Utilities

Smell gas? 0800 111 999

Provider	Matched District / Area	Status / Affected	ETR / Updated
National Grid ED (West Midlands)	SY15 Montgomery (Postcode SY15) — NGED INCD-80321-m	116 properties	15 Nov 2026 at 1:49 am GMT

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