This story is British in several ways. Firstly, it is set in Cambridge in 2016, which is a well-known city in England. Additionally, the story features a family going on a treasure hunt, which is a theme that is often associated with British literature and folklore. The idea of searching for treasure or lost artifacts is a popular trope in British literature, from stories like "Treasure Island" to the adventures of Sherlock Holmes. The story also mentions a ship called the "Royal Merchant", which could be seen as a nod to England's rich maritime history. Finally, the story touches on themes related to family and relationships, which are values often associated with British culture. Overall, while the story itself may not be explicitly "British", it contains elements and themes that are commonly associated with British literature and culture.