ukVote is a weekend project created by Jeevan Jones (@jeevanjones) in March 2014. The layout was redesigned to be more accessible on mobile devices in August 2014.
It's not perfect, but it gets the job done.
Results data sources: the Local Election Archive Project and EnglishElections.org.uk. Extra data is usually pulled from local authority websites. Council seat totals were pulled from BBC election pages.
See what's missing here — any additional data is gratefully received.