With my Community Councillor's hat on.
Where I live (and represent) some street lights are the responsibility of the Community Council (read Parish Council or Town Council) and others are the responsibility of the County Council. Usually, those on major roads, even if they have houses on, will be County Council,l whereas those on other roads will be Community Council.
There "should" be a reference number on the lamp post, so if you contact the council with this and the street name they can soon tell you. Regardless of whether your council do their street lamps in-house, or use a contractor, one notifies the council NOT the contractor. (He who raises the work order, pays the bill.)
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