Britzit-247 was a British colony planet.
The inhabitants of the planet were extremely angry about something, so they decided to go to another world, which was founded entirely on their mutual annoyance. Later they forgot what they were annoyed about, but remained annoyed.
The last copy of John Jones' final album was located there, which was stolen by the Eleventh Doctor and Alice Obiefune. While examining the album, the Doctor accidentally broke it.
On Britzit-247, there was a river which resembled the Thames, except it was made of molten lava. There was also a building that looked like Big Ben. (COMIC: Remembrance)