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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Scotland sees the best of today's weather but temperatures are a good 10C above average for the time of year across much of the UK.
In an emotional interview, the grieving mother recalls happy memories of her son who was killed in the Manchester bombing.
A stunning, summery day