Designed by James Wyatt and Robert Adam, the Grade I listed buildings had been unoccupied since the late 1980s and were on the 'Buildings at Risk' register.

In this phase, Feilden+Mawson designed a modern take on the classical original in contrast to the earlier phase, with an emphasis on authentic décor and furnishing of the period. This also incorporated a fluid organic bar designed by Zaha Hadid.