Good news. According to an announcement on their web site, The National Archives is developing an online 1911 census service, covering most parts of the census.
"We are actively investigating the possibility of launching this digital service in 2009. Over two kilometres of census records, containing the details of 35 million UK ancestors, will be digitised. This will provide an online service, across most fields of the census, enabling researchers anywhere in the world to search and download digital scans of images from the census. As with our current online census services it will be both address and name searchable. It is anticipated that it will be available from 2009. ... The full 1911 census won’t be released until 2012. "