Going by the photos, this looks like the stand alone monumental mass concrete modern stuff they did in the 60's but tailored today to serve as infill.
Got their influence from the new National Gallery Extension in Dublin no doubt.
I wonder what trendy colour they'll paint it: Roches Stores minimalist white, Project art centre blue, Earthy Terra Cotta, Insipid Lime Green, Magnolia etc or maybe they'll pebble dash it!
Look at that messy roofline too.
Why do they ever keep the facades after butchering the equally important interiors....ie the classical building beside it. Would be best to demolish the whole lot at the start. It's all cosy anachronistic lies and will be viewed as that in the future!