This is my contemporary magic and fantasy tale. Mike Miller attends Hemlock Hall, and at the age of 15 finds himself at the centre of a centuries old vendetta between those still loyal to the ideals of King Arthur, and the foul descendants of the odious Mordred. Various locations in the UK feature strongly : Blackpool, Glastonbury, and even a little town on the outskirts of Liverpool. But the story is not just confined to the UK; the magical citadel of Krickenstaltz is in a mountain range in Romania, plus there are sojourns here and there to the USA, Iceland and Australia. The tale eventually comes to a climax in the three-naved Cathedral of Saint Joseph in Bucharest.
https://www.amazon.co.uk/dp/B004KZQMTO