British politicians confused about maps

Bloomberg: A group of 81 British lawmakers have written to European Union President Donald Tusk to demand an agreement is reached on rights for Britons living in the EU and for Europeans in the U.K. before Brexit talks are formally opened.
The letter asks Tusk to add reciprocal rights for citizens to the agenda for a European leaders meeting on Dec. 15 and claims there is agreement across most EU states on the issue. Michel Barnier, who will lead negotiations for the EU, infuriated the group when he insisted talks cannot start on any aspect of Brexit until triggering Article 50 of the Lisbon Treaty, which formally starts the process of exiting the bloc. “No negotiation without notification,” Barnier tweeted on Nov. 21.

Here is a clue.   Walk backwards from where you are, British Lawmaker, then look at where you walked from.  That is the capital building of your country, get it?