At what addresses can UK citizens living abroad register to vote in a general election?

Question

The UK is holding a general election in 34 days. I'm a UK citizen, I have previously been registered to vote in the UK several times, some of those at distinct addresses, and I have lived abroad (but still in the EU) for less than a year.

My question is: At which of my previous UK addresses can I register to vote in the upcoming election? In particular, must it be the one where I most recently lived, or the one where I was most recently registered to vote? They are not the same.

I plan to vote by proxy. Not sure if that makes a difference. Thanks a lot.

Answer 1

According to the (pdf) register-by-mail application, it asks about when and where you last registered.

The main UK government website, Register to vote has an online application process as well.

For either process, you will need both your National Insurance number and your passport details.