Riddle

51.540063, -0.150869 (OpenStreetMap, Google Maps, Yandex Maps)

There are 12 of them living in Britain nowadays (however, not all of them are called that). The last one has joined the list just last year. In another universe to become one of them, you need to meet a number of criteria — one of them is to be human. It also helps to have an animal sidekick.
Pub at the north-east corner of the street.
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Detailed answer

It's princesses: there are 12 living princesses in Britian (with Princess Megan joining the list just recently). Other well-known kind of princess is Disney princess, most of which had their animal sidekick

Present in routes of categories Sphinx

Passed by: 21/22 (95%).

By categories:

  • Sphinx: 21/22 (95%)