A list of some online home-brew shops. Delivery is quite expensive, but the range is far greater than what you'll find in a local shop. also, the goods tend to be slightly cheaper as well, so that offsets the increased delivery cost... Get a friend brewing, and split the cost :-)
http://themaltmiller.co.uk/index.php - Speciality grain sold by 500g and 1Kg measures. Hops sold in 100g measures. Good selection for specialist recipes. also sells custom made equipment for extract or AG brewing (I very nearly bought both the mash tun and the boiler instead of making my own)
http://www.the-home-brew-shop.co.uk/ - Always worth cross checking for price with other sites. Have shopped from here and they offer a great service (sorted a problem within minutes) huge range of basic equipment and kits, also a good source of DME (dried malt) or syrup malt. They tend to be expensive for grain malt.
http://www.the-online-homebrew-company.co.uk/ - worth cross checking prices of kits here, also has quite an active members forum for advice and help (but most of them are resident on jim's home brew forum anyway) if you sign up to the newsletter, you get e-mails when they hold sales. and often have an "amber wednesday" when every item in stock is reduced by 10%
Other sources of information:
http://www.howtobrew.com/intro.html - A great web based book for learning the finer arts of brewing and fermentation. I read this site from start to finish and learnt loads of cool stuff from it. some of it is quite complex, but just take on board what you want from it. I got the hardcopy (3rd edition) for christmas last year and I'm really enjoying it. If nothing else, it's got very useful appendices.
http://www.camra.org.uk/home.aspx - Say no more. the club that does more to save british pubs and campaigns for lower tax on beer. also encourages pubs to stock real ale, yum. Join for £20 a year and get £20 of Wetherspoon vouchers (50p off per pint) and also a monthly newspaper, and quarterly (very good) magazine. Also you get a membership card which some pubs will honour a per pint discount on :-)
http://www.beersmith.com/ - Great brewing software for windows. make your own recipes and log your success's and failures. I signed up for a monthly newsletter from the blog, and it has some great in depth tips. the software works for all-grain, Extract and mini-mash brews.
http://www.kentplacesoftware.com/products/BeerAlchemy.shtml - If you have a mac, this is the software to use and it's great, it even links your recipe collection to your ipod !
http://www.jimsbeerkit.co.uk/forum/ - The forum is great for speaking to other brewers and drinkers and they were really helpful in helping me build my stuff (i'm newelley on the site) and it even has sections for more knowledge if you have the time to read more.
Books I have read:
Good Bottled Beer Guide (Good Bottled Beer Guide: The Camra Guide to Real Ale in a Bottle)
Good Beer Guide 2011
How to Brew: Everything You Need to Know to Brew Beer Right for the First Time
CloneBrews
Man Walks Into A Pub: A Sociable History of Beer (Fully Updated Second Edition)
The Complete Joy of Homebrewing Third Edition (Harperresource Book)
The Naked Pint: An Unadulterated Guide to Craft Beer
Brew Your Own British Real Ale (Camra) Revised edition
Favourite Country Wines and Cordials
ALL BEER Guide: The Ultimate Guide to the Top 25 Ale, Lager and Lambic Beer Styles and Flavours
My Beer Book
