Not sure it’s wholly wise of a Conservative Party agent to reveal this on their own blog about one of their election candidates:
Candidate Two managed to ask a Thai lady, who is not even a UK citizen, let alone a registered voter, to sign her paper. Strangely, however, despite not being registered she had a roll number alongside her name (although the number didn’t exist). When I asked where the roll number came from, the candidate replied, “Oh I couldn’t find her, so I added her to the end of the list and made-up a number for her.” [Voting and Boating blog]
As the Electoral Commission says:
It is a serious offence to include false information on the nomination or consent paper, and a person found guilty of such an offence may face imprisonment for up to a year or an unlimited fine, or both.