Over 3.5 million transcripts of parish registers, census, vestry minutes etc. are available on this website. The indexes can be searched for free and if you find something of interest then you can purchase credits. The cost per record seems to be £1.50, which is certainly cheaper than a trip to the Archives for most researchers.
The website is created by four genealogists; Holly Wanless Cochran, Tony Whitehead, George Turns & Ken Coleman.