When Blair was on the throne and Labour were in power, they allowed hundreds of thousand of legal immigrants, mostly from eastern Europe to come and work here.
They came legally, they worked, paid taxes, paid for living accommodation. Employers were happy, the taxpayer were happy, and economy was boosted.
The Tories got elected to cut immigration (including legal immigration). So now we have 600,000 illegal immigrants, that are not working, not paying tax, that we have to pay a fortune to accommodate, and are an utter burden.