It's not a fact - it's only a few years ago the BBC was trying to spin a report as good by ignoring the conclusion. The report said that EU migrants boosted the economy - but it was eclipsed to a big negative by non-EU immigration (the Labour "search party and wave 'em in" policy). Overall, the report showed that immigration was a net drain on the economy. No reason to think that has changed, really.
British blokes won’t clean bogs for £6 an hour. An Albanian will, so they get the job & keep the wage low. The British bloke goes without.
If there wasn’t the competition, they’d have to raise the wage to fill the job.
That’s the way I see it.