Mick Davidson’s The Darkness Beneath is a dark tale of a creature searching for its mate in London. Here’s the Amazon description:
She has to find a mate among London’s handsome young things. And the men she seeks out going willingly to their death, unable to resist her charms and what she offers. But she’s running out of time and luck: the police and vampire hunters are scouring the depths of the underground for her. She has to find her mate soon, or die.