was opposed by the Long Live Southbank Campaign which gained the support of Mayor Boris Johnson in early 2014, leading to the suspension of the Festival Wing proposals. (See Southbank Centre entry for further details.) Long Live Southbank and the Southbank Centre agreed a refurbishment programme for the Undercroft space which was subsequently carried out. Roof Since 2012, the temporary structure A Room for London has been located on top of the auditorium building. The structure, designed by architect David Kohn is described as "a one-bedroom installation" and is shaped to appear like a boat perched on top of a building. Recent developments In 2005–06, the South Bank Centre and Arts Council considered reconstruction or replacement of the QEH and Purcell Room by two new auditoriums, each of approximately 1,100 seats, one for classical music and one for amplified music and contemporary dance performances. This would have posed significant architectural challenges, given the constrained site and the close proximity of the Royal Festival Hall. In 2013, proposals were commissioned from Feilden Clegg Bradley for the Festival Wing scheme of the Southbank Centre, but this scheme did not proceed. The whole 1960s complex including the Queen Elizabeth Hall, Purcell Room and Hayward Gallery, underwent complete internal refurbishment under the banner "Let the Light In" in 2015-18, to designs by the architecture practice Feilden Clegg Bradley. The work does not cover any major cleaning or work to the exteriors. The Arts Council granted £10 million, the remainder being raised by sponsorship, such as seat-naming, and private donations. Although none of these buildings are listed or protected the Southbank Centre has consistently opposed petitions to the government for listing so that it can maintain as much flexibility to make changes as part of future development of this area of the site in accordance with its masterplan in the future, the level and standard of restoration and renewal carried out was commensurate with the building's significance and standing. References INTERIOR DESIGN: Inside the brut: Queen Elizabeth Hall, London; Architect: H. Bennett, April 1967, pp. 32–37. ARUP JOURNAL: South Bank Arts Centre; Architects: H. Bennett, Greater London Council chief architect, July 1967, pp. 20–31 ARCHITECTURAL REVIEW: South Bank Arts Centre, London borough of Lambeth; Architects: H. Bennett, architect to the Greater London Council vol. 144, no. 857, July 1968, pp. 14–30 OFFICIAL ARCHITECTURE & PLANNING: South Bank Cultural Centre, London borough of Lambeth; Architect: H.