This building, based in Oxfordshire is a giant microscope and is as big as five football pitches. It can produce the brightest light in the known universe – 10billion times brighter than the Sun.
No, I'm not going to talk today about the use of commas, or about proper nouns. Instead I want to ask: is it possible for a building to be 'based' somewhere?
People, businesses and organisations can be 'based' somewhere, using that base as a "centre of operations" (OED). But buildings? Surely there are 'located', 'situated', or just 'are'.
Of course Metro could have steered clear of verbs entirely, and simply written "This Oxfordshire building" or "This building in Oxfordshire"...