In what year did the United Kingdom formally leave the European Union?
Answer2020
A trade agreement between the UK and EU then took effect the following year, in May 2021.
Source: Wikipedia - United Kingdom (2020) en.wikipedia.org
Places · Facts & sources
UK facts & stats
5 sourced facts about the United Kingdom, each with the context behind the number. 4 more are in today's round and appear here after it closes.
The basics
About what is the population of Greater London?
Answerabout 9.8 million
London's wider metropolitan area is home to roughly 15.4 million people.
Source: Wikipedia - London (2025) en.wikipedia.org
Going deeper
About how many stations does the London Underground have?
Answer272 stations
Over 4 million journeys are made on the Underground network every single day.
Source: Wikipedia - London (2024) en.wikipedia.org
About how many international visitors did the UK receive in 2024?
Answer42.6 million visitors
Those visitors spent a combined £32.5 billion while in the UK.
Source: Wikipedia - Tourism in the United Kingdom (2024) en.wikipedia.org
Expert level
Where does the UK rank among the world's most-visited countries?
Answer9th–10th most visited
That's still remarkably high for a relatively small island nation.
Source: Wikipedia - Tourism in the United Kingdom (2019) en.wikipedia.org
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