A 'brutalist' electricity substation on Moore Street in Sheffield, was an important component of the radical post-war regeneration of the city which was badly bombed, English Heritage said.
The building, designed by Bryan Jefferson, has been listed at Grade II.
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After a cold start on Wednesday, it will be another day of sunshine and showers across many central and eastern parts.
It is claimed that both police and security services, including MI5, have been prevented from vast pools of data on the social media site.
School funding is shooting up the list of voters' priorities as the General Election approaches, according to researchers.