Thom Madley: Marco and the Blade of Night (UK 2007)

From the Publisher:
Glastonbury is a town steeped in mysticism, magic and religious cults. So when Marco's friend Rosa pulls a strange rusted object out of the riverbank, the rumours start spreading. The power of legends is back in full flow and the hunt for Excalibur is on.

Thom Madley: Marco and the Blade of Night. Usborne; ISBN: 0746076983 (June, 2007), 429 p., £6.99.