The petition is here. Looks like it just crossed 1,000,000. https://petition.parliament.uk/petitions/241584
After all, these are just names of people, sure they may check against an election role register and that does somewhat depend upon no ID-fraud, of which the site offers no protection against whatsoever.
Well worth looking at how this progresses via the data available :- https://petition.parliament.uk/petitions/241584.json
However I'm not suggesting that all those anomalous votes in that petition are ex-pats.
Had we had a national ID card, such systems might take on more credibility, alas such ID cards in the UK are often disdained by a vast majority for various reasons of self-privacy. Yet such ID cards are most common throughout Europe. Indeed, some countries (Brussels iirc as one) have a law that makes not voting in an election a crime, so they get close to 100% turnout, they also have ID cards.
With the referendum it's more justified. There were financial irregularities which would have rendered the result void but the vote was non binding so the Electoral Commission advised it can't intervene other than to fine some of the guilty.
Even the 2016 EU referendum wasn't the first we've had. As the voting populous grows old, new voters come of age, and the relationship with our EU partners change, it makes total sense to revisit past decisions.
Nothing in democracy should be closed to re-evaluation for all time in the future just because some people made a vote once.
No one wastes their vote voting tactically, everyone gets their voice heard, and we get to choose exactly how we shoot ourselves in the foot when Leave wins a 2nd vote.
I mean how could Leave lose? It was the will of the people, they'll clearly vote the same again. /s
Better than the current game of 3d chicken we're playing right now.
"I'm sorry, you cannot return this jumper you bought online because even though it doesn't fit you, you've already decided to buy it and all decisions are final".