Intellectual Property Office copyright information (http://www.ipo.gov.uk/copy.htm)
There is no official register for copyright. It is an unregistered right that is automatic as soon as something that falls within its scope is created.

Anti Copying in Design (ACID) (http://www.acid.uk.com/)
Information on this organisation that supports protection of designs and copyrighted material.

Design and Artists Copyright Society (DACS) (http://www.dacs.org.uk/index.php?m=5)
DACS is the copyright and collecting society for visual artists in the UK. Useful factsheets covering copyright affecting visual and artistic works e.g. photographs, engravings, cartoons, sculptures.