This is a lookup between electoral wards/divisions, Westminster parliamentary constituencies and local authority districts in the United Kingdom as at 31st December 2018.
This dataset is used in the london_votes sample Splitfile in which the 2017 General Election results and London Ward geodata are joined through the ONS UK Ward-Constituency lookup table to build a dataset of London constituencies and Conservative/Labour votes in each, ready for plotting as a Choropleth map.
london_votes
ONS Geoportal
Contains National Statistics data © Crown copyright and database right 2012