The Grade 2 Armstrong building has undergone a series of phases of renovation and alteration to the internal layouts as the 1960s alterations have been stripped out and the original building re-opened up with contemporary additions to compliment the wonderful original building.

Externally the windows have been replaced – in a lengthy replacement of the original metal windows – to match the original windows following a conservation survey by HL in a review of the external facades. The Boiler House adjacent to the Armstrong building forms one half of the original building. Although never used for equipment it has housed the marine department and built an extension in the 1950s on the roof. These latter alterations were removed, back to the structure. A new reception and gallery space has been created facing onto the new landscape created externally. Both projects won at the 2018 RICS awards for Conservation category.