Factual error: It's late 18th, possibly early 19th century and, as Jane and her sister walk along the beach, a construction crane is visible on the horizon.
Revealing mistake: In the bedroom, when Cassandra asks about what Jane has been writing and Jane answers, "Just something I started in London", when Jane gets up and moves to the table, it is obvious that she is wearing a g-string under her nightgown.
Other mistake: When Henry and Lefroy strip off before going swimming, they enter the water wearing their boots, however their trousers have been removed despite there not having been time for them to remove them and replace the boots.
