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Utility companies with Crystal Marks
List of utility firms (gas, electricity, phone and water companies) who have Crystal Marks, together with a link to their website where available. (all links open a new window)
The organisation has at least 25 documents with the Crystal Mark.
The organisation has at least 50 documents with the Crystal Mark.
The organisation has at least 100 documents with the Crystal Mark.
(now Orsted)
(part of Anglian Water)
(part of E.ON Group)
(operating under OVO Energy)
(joined National Grid)