Our tour guide informed us pretty quickly that the Middle Temple Law Library made it a point of collecting all laws that might impact or come into play for lawyers who were affiliated with this library. That is, they had collections of EU and US laws (along with other laws from other countries) available for lawyers to use. I couldn't help but think about the line in their collection. After new laws are passed in unaffiliated England/the UK, materials will be noted as post-EU (one would think). The collection would be forever altered by this political break.
Beyond the politics of Brexit, this reminded me of the impact that politics have on all facets of living, including libraries. It is easy to become distracted by the nuances of the "best library software" or the "most useful organizational strategies", but politics can make a well-executed plan and turn it to mush. I'm not saying that Middle Temple Law Library has experienced this, but the notations required and the types of queries they experience will be altered by this vote. Their collections and organizations of materials will likely be altered.