Why are the government not doing anything about this rapid immigration?

Hi well I live in London(UK), and I don't mind multicultural but now this is getting a bit out of hand! now the UK current population is around 62-63 million which it is quite allot for a country this size. currently there are around 6 million LEGAL immigrants and around 1-2 million ILLEGAL so that's around 7 million immigrants which is quite allot, on average 300,000 immigrants come to this country every year which means 200,000-300,000 homes are tooking up by immigrants and then they bring there families and they are mainly from developing nations and on average have around 3-6 children compared to a British female only having around 1-3 children! my point is I think that the UK would be so much better financially if it only had around 2 million immigrants. I am just sick of hearing 20 languages walking down the street and last week I was in the bookstore and the istance didn't even hardly speak english WHAT THE F_CK?! this immigration is getting out of hand 1/3 of new homes are for immigration which is taking up our lovely countryside why aren't the government doing something to control it, yes they do the work we particularly do not enjoy but not all of them! we need to act now I am trying not to be racist but I don't wont to see a bad future for my children being in a congested country!