Germanshepherdsmum
Apparently the fraudulent claims started in 2016 and were detected in 2021, when investigations commenced. It was an extremely sophisticated fraud involving a lot of forged documents and stolen identities, as well as real people who applied to a company set up by the fraudsters to obtain NI numbers and benefits for the applicants. Now which legitimate UK citizen has to resort to such measures?
I remember the brouhaha about Bulgaria joining the EU.
I have absolutely no idea what the answer to your question is, but I don't see why UK citizens wouldn't be able to set up a similar operation. I don't see why anybody would need to be a foreign national to do the same. I know of somebody, a British national, who defrauded the local council of nearly a £million before she was caught. I suspect some people on GN (if they were ever a member of another social media site) know the person.
If the loopholes are there, I'm not surprised somebody exploited them. Like others, I'm just amazed that the DWP was so lax. I expect some people have read about the people in receipt of Carer's Allowance who have been caught out for earning a couple of pounds over the threshold. It seems the DWP's priorities are wrong.