Passports
(asked on 10th March 2016) - View Source
Question to the Home Office:
To ask Her Majesty’s Government how many valid British passports are currently held, and how many of those passport holders also hold passports of another state.
This question was answered on 16th March 2016
There are 49 million valid UK passports in circulation. Records are not held centrally of persons holding both a UK passport and foreign passport.