London: Psychologist Dr Emyr Williams has been investigating the 'underground network' of real-life vampires and has found that Britain apparently has 15,000 vampires.

Representational picture

Williams claims that there are group of people in almost every sub culture who drink blood and drain energy from human beings but their deep-rooted laws only allows them to drink from certain body parts of the willing donors and not drinking too much, reported.

He further explained that Sanguine vampires are very fascinating and he does not want them to label as mad or bad as there are psychic and hybrid vampires, blood donors, role-players and also enthusiasts who are part of the community.

William has outlined an online questionnaire to advance his research.