The 1901 Census returns for England and Wales was released over the Internet on the 2 January 2002. They will be viewable anywhere with Internet access, including the Family Records Centre (FRC).
If you intend to visit the FRC to view the 1901 Census be advised that demand for access is likely to be high for several months and the FRC are putting special arrangements in place to ensure everyone has a fair chance of accessing the information.