For a limited time, the Times of London will provide free access to its archive online. Currently scanned pages from 1785 through 1985 are available. This includes the law reports, with full-text or excerpts of cases, articles, advertisements and announcements. Now is the time to search for those 18th and 19th Century English cases. Registration is required.
The Times Archive http://archive.timesonline.co.uk/tol/archive/