Hi there:
Taken fron GENUKI:
In England and Wales you should be able (especially if you are blessed with a set of unusual surnames in your family) to trace your family roots with comparative ease back to 1837 (when national birth, marriage and death registration began). Getting back beyond 1837 normally relies mainly on the use of parish registers - with luck, and allied to other types of records, these might enable you to trace your family back to the late 16th century. Beyond this can be extremely difficult, unless you can tie in to a well-documented pedigree, for example of royalty or a great landowning family.
However, on this site we can help, you will find various links and visiting the boards for the individual counties will give you lots of information.
Good Luck,
Kazza.