According to the research, the number of lights dimmed or switched off increased from 148,000 in May 2010 to 1.36 million currently.
"Our research shows, however, that significant areas of Britain have been plunged into darkness since May 2010 as a result of David Cameron [the Prime Minister of the UK] and Eric Pickles' [Secretary of State for Communities and Local Government] policies," Hilary Benn, the Shadow Secretary of State for Communities and Local Government, said, as quoted by the Guardian.
Eric Pickles stated earlier this year that he loved having the streetlights off at night, because it was saving a "phenomenal amount" of money, decreasing crime, making it easier to see the night sky and therefore easier to sleep, according to the Guardian.