TES

The Times Educational Supplement is undoubtedly the largest teaching community in the UK. The forums cover a range of subjects and roles, but the main reason teachers call in here is for the resource bank (and possibly the job bank too). Among the resources are thousands of lesson plans and materials for all subjects and ages - all free to download. Most are customisable so they can be adapted to suit your individual classes. A free registration is required but it takes minutes and is worth the hours it will save you in preparation time. Check out the forums while you're there and bookmark it as you'll no doubt be a regular visitor.