Part of the redevelopment of the Millennium Dome involved the construction of the O2 Arena Sponsors Lounge. The concept was to have three interlocking domes, of different sizes, and entrance tunnels. The lining for the structure was a 'Barrisol' membrane which is installed loose and then heat shrunk to assume the tensioned surface. Tony Hogg Design resolved the complicated geometry of the supporting steelwork, along with engineering and detailing the structure.