DIFFERENT ELECTION SYSTEMS USED IN THE UK

EUROPEAN PARLIAMENT - regional list system (closed)
UNITED KINGDOM PARLIAMENT - first past the post
REGIONAL ASSEMBLIES:
N Ireland - single transferable vote (STV)
Scotland - additional member system (AMS)
Wales - additional member system (AMS)
Greater London Assembly - additional member system (AMS)
Mayoral elections - supplementary vote (SV)