FreeBMD is a great free resource. It does not only have links to pay sites as one person said, but has a searcheable database of the BMD transcriptions. It is a volunteer project and will take some time to complete, but is well worth it.
1837 only has scanned documents and no proper index and you have to pay.
John
Clarke family tree, and connecting branches and roots, from Hampshire, UK to the Titanic + beyond. We have links for the name CLARKE obviously, but many others, see the whole list. If you think you have a link into our family tree, or would like to put out a request for genealogy assistance, email pauly @ this domain I will try to help... The site is also home to my blog, with links to all the things I like. All about me, my lovely wife and our amazing boys... Also the usual things, work, TV, running, ect ect, + links to my fun projects.