For those of you with ancestors in England, this website is extremely useful. It operates on a paid credits system, which is a bit different to ancestry, or a subscription. The site has the 1911 English census available, which Ancestry does not yet have. It also claims to have the most complete BMD (birth, marriage, death) index from when they began national registration in 1837 to 2006, indexes of parish registers, and some military records.
Information on how much the credits and subscription costs can be found here. For those that need a quick currency exchange to know how much it will cost, I've found this tool to be useful during my travels: Link.