Inside the revamped BBC Broadcasting House

A view of the revamped BBC Broadcasting House from Langham Place, with the new extension pictured centre Photograph: Simon Kennedy/BBC

An aerial view of BBC Broadcasting House Photograph: Simon Kennedy/BBC

The curved facade of the extension blends in to the Grade II* listed 1930s building on the left. the new main reception is through the doors on the centre Photograph: Kevin Sansbury/BBC

A night view of the new curved glass entrance Photograph: Mike O'Dwyer/BBC

The 4,000 sq m newsroom in the basement forms the heart of the extended building Photograph: Kevin Sansbury/BBC

A view from the newsroom up through the atrium of the extension. The new building offers 80,000 sq m of production areas, studios and staff facilities Photograph: Kevin Sansbury/BBC

The cafe, from which the public can watch journalists at work in the newsroom Photograph: Kevin Sansbury/BBC