I worked for Eurotunnel/Getlink, actual operator of the tunnel(s), as a software architect between 2012 and 2020. I can tell several fossils were displayed in

I worked for Eurotunnel/Getlink, actual operator of the tunnel(s), as a software architect between 2012 and 2020. I can tell several fossils were displayed in the main office building both in France and in UK. I remember a big ammonite, like 90 cm wide at least, displayed on the French Terminal, main office building with a sign next to it explaining the context of the discovery.