www.kendo.org.uk The website of the British Kendo Association, also includes information on Iaido and Jodo.
http://emaishop.com/

Equipment supplier based in the East Midlands. Sells Iaido and Kendo equipment, also repairs bogu.

www.e-bogu.com

Equipment suppliers for martial arts, based in the USA.

www.ninecircles.co.uk UK Agents for Kendoshop, suppliers of Kendo and Iaido equipment.
www.customkatana.co.uk Japanese swords, accessories and bokken.
www.davidsondesigns.co.uk Embroidery service (for examples of work click here).
www.anshin-budo.co.jp Kendo supplies (Japanese website).
www.kk-sanbu.com Kendo supplies (Japanese website).
www.kendo-world.com The only English language magazine for Kendo, Iaido, Jodo and Naginata.

Good books (but no substitute for practice):

Kendo, the Definitive Guide by Hiroshi Ozawa (ISBN 4-7700-2119-4)

The Shambhala Guide to Kendo by Minoru Kiyota (ISBN 1-57062-927-7)

The Book of Five Rings by Miyamoto Musashi (Translated by Thomas Cleary) (ISBN 1-57062-748-7)

Looking at a Far Mountain, a Study of Kendo Kata by Paul Budden (ISBN 0-8048-3245-5)