The report originally from UCL was misinterpreted by Migrationwatch who simply guessed a lot of the figures to try and prove their point and has been blasted by academics.
http://www.cream-migration.org/comme...cle.php?blog=8
The inconvenient truth is that Britain has an ageing population with people of a pension age growing faster than the working age population. The only options to address this in the sort term are:
a) make people work longer
b) reduce the state pension
c) increase the working age population (immigrants of a working age)
This isn't some sort of socialist agenda and I understand why it is unpopular with many people, but it is simple economics and demographics.