This is a list of everywhere outside of the UK that I have been to in my lifetime. I'm bound to have forgotten a couple of places here and there but I've done my best to think of everywhere.
The destinations are from Europe, Asia, Oceania and South America, in that order. There are lots of well-known places throughout the list, in addition to some lesser-known ones plus a couple which are truly obscure! It'll be interesting to see if anyone else has been to the latter.
I've only included airports if I only went through the airport and never got to go into the city itself (such as Zurich, Frankfurt and Bogotá Airports), with one exception (Euroairport Basel-Mulhouse-Freiburg).
I've only included seas, oceans, rivers and lakes if I've been across them via boat or have swam, paddled in or otherwise physically touched the water.