1975: membership of the EU
2011: proposal for an alternative voting system
2016: membership of the EU
1998 Greater London Authority referendum
2004 North East England devolution referendum
1973 Northern Ireland sovereignty referendum
1998 Northern Ireland Belfast Agreement referendum
1979 Scottish devolution referendum
1997 Scottish devolution referendum
2014 Scottish independence referendum
1979 Welsh devolution referendum
1997 Welsh devolution referendum
2011 Welsh devolution referendum