Adoptmama, firstly, you are still dodging the issue we were actually discussing, namely evidence of the socially beneficial effects of diversity, not the economic impact of immigration.
Secondly, I never claimed there was a compelling economic case against immigration. What I said was:
"As for the economic benefits of immigration the net benefit is not substantial, and no where near worth the social disruption in my view."
So I am not arguing that immigration is economically catastrophic, I am arguing it does not provide a substantial benefit (and additionally is regressive), and couple that with the demonstrable social harm caused by ethnic diversity (which has been massively increased by recent immigration), and overall, the case is firmly against immigration.
As for the treasury report, it says:
"Treasury select committee told foreign workers more likely to be of working age, contribute in taxes and help public purse"
Well unless all foreign workers are Peter Pan, they too will grow old. So the fact that they are disproportionately of working age now is no argument that they will be of long term economic benefit. Indeed, as the paper I linked to indicates, the net fiscal impact of GPD in advanced nations is very small, ranging from -1% of GDP to +1% of GDP. That kind of benefit is far too small to justify radical demographic transformation.
As for the following study which was referenced by Dawn:
www.bbc.co.uk/news/uk-24813467
The findings of that study are hardly uncontested:
www.telegraph.co.uk/news/uknews/immigration/10693022/Immigrants-cost-Britain-3000-a-year-each-says-report.html
"MigrationWatch accused the authors of the UCL report, Prof Christian Dustmann and Dr Tommaso Frattini of the Centre for Research and Analysis of Migration, of burying a crucial figure in an annexe of their original report, published in November.
It was claimed the UCL study found the overall impact of immigration had been £95 billion but this “was not even mentioned in the text of the report”, said MigrationWatch.
It added that the omission was “truly astonishing”."
And adoptmama references the following:
www.cebr.com/reports/migration-benefits-to-the-uk/
refers specifically to "established European countries", so isnt representative of immigration as a whole. In any case, the benefits it points to are very small. Tightening immigration will, by 2050, lower GDP by a whole 2%. Well shock horror. And I am sure you can accurately predict changes that small over a 36 year period.
And aside from the blatant cherry picking going on here (you will notice the link I provided was specifically one which looked at the overall findings of many studies using many methodologies, not simply the studies which I found convenient), even if we take this selective evidence at face value, we are talking about rather small changes here. Since when was it justified to radically alter the demographics of a country to reduce government borrowing by 0.5%?
You could improve the economy by far more than that if, for example, you had mandatory euthanasia at 70. But there is actually more to life than a a percentage point or two of GDP either way.