The Boris Wave has been the biggest adverse event to the UK since OPEC Oil crisis.
Generally refugees / asylum seekers have negative impact on the budget but their number is small so overall drag is small while skilled/work immigrants have positive impact (paying more in taxes then getting back) and there are more work migrants than refugees.
It dipped at the peak of the Boris Wave, and is only now starting to creep up. Good luck proving your Brexit counterfactual.
>>Generally refugees / asylum seekers have negative impact on the budget but their number is small so overall drag is small while skilled/work immigrants have positive impact (paying more in taxes then getting back) and there are more work migrants than refugees.
When you factor in the entire extended family that an immigrant on a work visa settles in the UK, this is not true. Also, given that you can get a "skilled worker" visa for working in a kebab shop or a corner store [1], "skilled" is doing a lot of heavy lifting in your sentence [1].
An immigrant cannot bring an extended family - only a spouse and children (younger 18). And they are not eligible for benefits so have no impact on the budget. Skilled visa is abused (to bring relatively low skilled workers) but that's not too common and they still pay taxes, just less than someone working at Google.
I recommend to listed to this podcast (or read transcript) it's not trying to defend immigration at all but di-spells lots of myths about economical impact of immigration: https://ifs.org.uk/articles/how-does-immigration-affect-publ...
The major point, though, is that countries are not economic units, and are closer to families than they are companies.
1. I did check graphs and see low correlation - GDP pp dipped after GFC (2008 crisis) then again around Brexit referendum and started to recover 2021 - around the start of the Boris wave. 2. Even if we had a correlation it doesn't imply causation especially given multiple factors battered the economy around the same time - Brexit, COVID (which had delayed and lasting impact) and Russian-Ukrainian war.