You missed a category.
EU citizens who have been illegally given the vote in the Parliamentary election.
According to the
Electoral Commission you must
- be 18 years of age or over on polling day
- be a British citizen, a qualifying Commonwealth citizen or a citizen of the Republic of Ireland
- not be subject to any legal incapacity to vote
I can't say if that's accurate, but I changed it to participating and not participating.
My friend reported the mistake to the Electoral Commission and they haven't acknowledged receipt of his email complaint.
UK is getting more like a banana republic with every day.