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.