And yet the guidance couldn't be clearer that you can not use Singh to circumvent UK immigration rules!
The one that sticks in my mind most, was a Brit worked in the US who could have easily have met the requirements to sponsor her US citizen husband but they chose to try to use Singh instead.
Moved to Ireland and she worked, and then they moved to the UK just before she gave birth, even though the new EEA Regs were in which clearly showed he would not get an RC, that's even if they didn't know that this abuse on the Singh ruling was being stopped before they left the US.
He worked while in the UK but was correctly refused an RC for the UK, which meant he could not live or work in the UK. Even if he had managed to get an RC before the ECJ gave their stance, he would never have got the EU's PR in the UK as he didn't meet the ruling requirements for Singh. And Brexit was coming anyway which ends EU rules and European Court of Justice rulings in the UK.
The Brit hadn't worked since she returned to the UK and now months later, she could not sponsor him for a spouse visa anymore. He will now have to wait in the US for 6 months while she works to be able to sponsor him. Or to avoid deportaton, he could put in an application for the very expensive 10 year route of 4 visas to ILR as they have a British baby. But until he gets that months down the line, if he gets it, he will be an overstayer in the UK, no working, no free use of the NHS, no driving etc And as we know, those applications have been on hold since February anyway.