Firefighters were called to tackle a massive blaze at the former May Gurney office building in Trowse. 

More than 19 crews attended the scene late at night on Saturday, where the fire had spread across the roof and first floor.

Videos captured from a property near the scene show the large emergency response and firefighters on aerial ladder platforms.

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The site has been broken into on several occasions since becoming derelict and there have been concerns about security.

The site was earmarked for development in the East Norwich Masterplan and outline planning was approved in 2013.

But the works have proved controversial among people living in the area - with many raising concerns about traffic chaos and flooding.

This incident is being treated as suspected arson with enquiries currently ongoing.