The "changes" I was referring to was the original boundary changes report, not changes to the changes - just shorthand for the submission that people were referring to.There are no changes to be submitted after the Boundary Commissions' reports. 4 months to submit the Order in Council - "unless there are exceptional circumstances". Govt has 10 sitting days in Parliament (so now 10 days after the state opening of Parliament) to make a statement specifying the exceptional circumstances (with no comeback I can see if no-one thinks the circumstances are exceptional).
Boundary changes benefit the Tories because boundaries are based on how many people register to vote, and people living in their own homes are more likely to vote Tory and more likely to register than people moving from rented property to rented property, so it's in their interest to have the new boundaries in place.
The person who originally posted this on Twitter, who works at the House of Commons library, got a reply from the
Department for Levelling Up, Housing & Communities, stating that the submission had been made within the four months. He does go on to say that he can't find this minuted, but hasn't posted again, so I assume he's accepted it.
The whole point of people highlighting it, was because it's common knowledge that the Tories want the new boundaries - that's why it's on this thread, and was being described as them fucking up. I completely agree with your point on that, and think it's high time we had auto-enrolment on the electoral register, and based constituencies on how many people were actually in an area.