The second phase was the creation of the large wing to the rear of the building, joining the two buildings, and creating a plaza between them.
The original architects were replaced for not agreeing to cost-related revisions, as Sir Richard MacCormac was unwilling to sacrifice the quality of his design.
Construction was completed by Bovis Lend Lease in 2010, and control handed over to the BBC in 2011.
While the rebuilding process was under way, many BBC radio stations moved to other buildings near Portland Place.

The extension contains the BBC News and Journalism departments, and state-of-the-art technical equipment and new studios to house the BBC News bulletins on television, the BBC News Channel and BBC World News, the BBC Arabic Television service and the BBC Persian Television service.
At the heart of this is a new newsroom, the largest live newsroom in the world.

A walkway above the newsroom allows the public to view the work of journalists, connecting the foyer to the Radio Theatre and a new café for staff and the public.
Complemented by the outdoor plaza, which could act as an outdoor arena and theatre, this is designed to engage the public with the television and radio making process.
The extension is glass-covered in the plaza area and curved to contrast both wings either side and to continue the glass on both sides high up the building.
On the Portland Place side, it continues the same use of Portland stone and glass as with the John Peel Wing.

On Monday 18 March 2013 at 1 pm, following the BBC News Channel's final broadcast from Television Centre, the first news programme from Broadcasting House was aired: the BBC News at One, on BBC One and the BBC News Channel.
BBC World News was the first of BBC's news services to move into the new building on Monday 14 January 2013, beginning with "GMT" at noon.

Queen Elizabeth II officially opened the extension on 7 June 2013.
The second phase development won the 'Programme of the Year' award at the 2013 annual awards of the Association for Project Management.
The second phase was the creation of the large wing to the rear of the building, joining the two buildings, and creating a plaza between them. The original architects were replaced for not agreeing to cost-related revisions, as Sir Richard MacCormac was unwilling to sacrifice the quality of his design. Construction was completed by Bovis Lend Lease in 2010, and control handed over to the BBC in 2011. While the rebuilding process was under way, many BBC radio stations moved to other buildings near Portland Place.
The extension contains the BBC News and Journalism departments, and state-of-the-art technical equipment and new studios to house the BBC News bulletins on television, the BBC News Channel and BBC World News, the BBC Arabic Television service and the BBC Persian Television service. At the heart of this is a new newsroom, the largest live newsroom in the world.
A walkway above the newsroom allows the public to view the work of journalists, connecting the foyer to the Radio Theatre and a new café for staff and the public. Complemented by the outdoor plaza, which could act as an outdoor arena and theatre, this is designed to engage the public with the television and radio making process. The extension is glass-covered in the plaza area and curved to contrast both wings either side and to continue the glass on both sides high up the building. On the Portland Place side, it continues the same use of Portland stone and glass as with the John Peel Wing. 
On Monday 18 March 2013 at 1 pm, following the BBC News Channel's final broadcast from Television Centre, the first news programme from Broadcasting House was aired: the BBC News at One, on BBC One and the BBC News Channel. BBC World News was the first of BBC's news services to move into the new building on Monday 14 January 2013, beginning with "GMT" at noon.
Queen Elizabeth II officially opened the extension on 7 June 2013. The second phase development won the 'Programme of the Year' award at the 2013 annual awards of the Association for Project Management.
Broadcasting House