I think you may be missing something, somewhere, Prudie. I have used the site for the past 6 years, and have traced one line in my father's family back, allegedly, to the Norman Conquest! Funnily enough, more recent data is sometimes harder to find. Have you tried searching for your grandparents in previous Census returns? Another problem can occur if the hand written originals were wrongly transcribed - don't limit the search to the exact surname (example, the surname Gillians has appeared as Gillions, Gillins and Gillons).