Am I right in saying that the Singh route is affected - full stop. Not "just people who used it to circumvent immigration rules". Cuz honestly, I don't know how they would prove intent. I imagine there are many couples/families who legitimately want to use Singh but are now unable to.
No, the genuine people will be OK still until Brexit (and then who knows what there status will be in the UK). i.e. someone who worked in an EEA country for 15+ years with their non-EEA spouse, or has moved to a few EU countries with their non-EEA spouse over the decades, is a geniuine Singh case.
The highest court in the EU made it quite clear years ago that 3rd country nationals are not allowed use Singh to avoid the immigration rules of that EEA country. This is nothing new as there are still posts from those in the UK who entered under Singh years ago (spouse and family members) and have been refused permission to stay. They use the courts to try to get permission to remain but they don't seem to win. They have been overstayers for all that time and the only winner is their legal representative.
There seems to be a set pattern for those trying to use Singh to enter the UK to avoid UK immgiration rules that even I know now
and the EEA Reg changes have just made it clearer on who is to be refused an RC for this "fraud" as the government call it.
The usual pattern is go to any EEA country even though they have never lived in any EEA country before, intergrate to try to show "centre of life" then enter the UK asap. A genuine Singh case would be in that country for many many years and maybe be in several EEA countries with their Brit spouse over the decades.
It isn't hard to put in rules to stop a set pattern. i.e. The new EEA Regs in that link show what that criteria will be to find those 3rd country nationals using "fraud". One of them is if that was the first EEA country that non-EEA citizen has ever lived in. They also make it clear now that Singh cannot be used by 3rd country nationals who are tyring to use Singh to avoid UK immigration rules. For those doing this, it will be like a lucky bag. Have a read of the two govenment links.
We are seeing refusals of RCs under the new rules too. The first I saw was someone who could have entered under UK rules as they worked in the US and would have met the financial requirement to sponsor their husband without waiting 6 months, but they choose what they thought was the cheaper option of the well worn route of Ireland and then Singh to the UK. Entered on a FP and found a job in the UK but now months later, he has correctly been refused a UK RC and has no right to reside in the UK.
However, the Brit wife entered the UK pregnant, didn't go back to work and can't now meet the requirements to sponsor him to the UK anymore until she has worked for 6 months. He will have to return back to the US for a visa application anyway.
It's not just the Singh route, the UK have shut down a lot of abuse from 3rd country nationals using EU laws or EU court rulings to reside, as have most of the popular EEA countries. All this was in place before the vote to Leave, in June.