Oxford Blood (The Cavaliers Series: Book One): A vampire urban fantasy romance trilogy

The Cavaliers are
the most prestigious society at Oxford University—rich, powerful, and
beautiful. No one realises that they are no ordinary students, but a group of
aristocratic vampires from the English Civil War. For four hundred years they
have groomed promising students to run the government, police, and finance,
granting them eternal life in return for absolute obedience.

When Harriet French
arrives at Oxford University from her working-class northern state school,
she’s prepared for a culture shock, but not for the Cavaliers’ scheming and
bloodlust—or the romantic attention of two rival vampires, who are attractive
and terrifying in equal measure.

Harriet thought
she'd be busy enough juggling her demanding professor, new friends, and the
shady world of student politics. But now, she must find out who is killing off
members of the Cavaliers, stop the group from orchestrating a massacre of the
year’s most beautiful and successful students, and defy the society to be with
the vampire she loves.