Question to the Cabinet Office:
To ask Her Majesty's Government how many overseas electors are (1) on electoral rolls in the United Kingdom, (2) apply for a postal vote, and (3) voted in the 2019 general election.
There were 233,000 overseas electors registered in Great Britain for the 2019 general election. The Government does not hold data on the number of overseas electors who submitted a postal vote application or how many voted.
The Office for National Statistics also publishes electoral statistic bulletins with some information on overseas electors. This can be found here: https://www.ons.gov.uk/peoplepopulationandcommunity/elections/electoralregistration/bulletins/electoralstatisticsforuk/previousReleases.