The British gave us some marvellous things, such as
Railways through Africa Dams across the Nile Fleets of ocean greyhounds Majestic, self-amortizing canals Plantations of ripening tea (got it right this time Rosanna)
I expect they also invented this device for allowing almost natural light to below ground areas in buildings. I am convinced that the British Luxfer must have been superior to any other model. Sadly this one near my workplace has had its glass removed and filled with concrete, but I know there are some intact ones in the city. But I wonder if they are the British Luxfer. When only the best will do.