National Elections
The last General Election took place in 2010. 
2010 Parliamentary Local Election Result [38kb]
The Fixed Terms Parliaments Act 2011 sets the date of the next General Election as 7 May 2015, and on the first Thursday in May in every fifth year thereafter. Early General Elections may be held in certain circumstances.
Referendums
Referendums are held occasionally in the UK. Since 1973 there have been eleven referendums in the UK, but only two of these covered the whole country. Major referendums have always been on constitutional issues.
On 5 May 2011 a UK-wide referendum was carried out asking whether or not to change the voting system used to elect Members of Parliament to the House of Commons.
