This guide can be found at www.lux.org.uk/distributionguide which contains detailed listings of exhibitors ands other resources.
The LUX website includes detailed information and resources for artists working with film and video and you can subscribe to a free monthly e-newsletter, the LUX NEWSWIRE which includes opportunities and calls for artists at: www.lux.org.uk
Artquest is a great online resource for all information artists need: www.artquest.org.uk
AN magazine is a monthly publication full of useful information and opportunities for artists: www.anweb.co.uk
British Council website which includes a useful directory of film festivals: www.britfilms.com

There is also a number of other organisations that can help you further. These include:
Professional development organisations - can provide you with information, advice, networking and training. See www.creativepeople.org.uk for organisation contacts
Distributors - Will represent your film and video work to exhibitors worldwide, LUX is a distributor, see the the LUX distribution guide for more information about these and how to submit work.
Agencies - These are organisations that assist artists to develop projects and link them up with exhibitors, see LUX distribution guide for more information.

Benjamin Cook is currently director of LUX.