How many Immigrants/asylum seekers are in Great Britain?

Keep reading that Britain needs immigrants to boost the economy, i cant see how when the majority of the ones ive seen and worked with don't work and claim money,housing,schooling,health care,dental from the government (tax payers) there are still millions of failed asylum seekers still here too and that's with out the millions that have entered illegally (i used to work for immigrations at heathrow terminal 2) how many are there? and how much on average does it cost us a year? can you honestly say this helps boost our economy?
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to all those people who argue that immigrants are good for the economy.... well i am here to tell you that an estimated 80% of all immigrants who came here in the past ten years are claiming some sort of benefit or other. and considering that they are allowed under eu law to send a proportion of it back home that is an awful lot of money this country will never see again disappearing every week. when you add on top the NHS and the cost of the estimated 67% of crime attributed to immigrants please feel free to e-mail me and explain exactly how this benefits the UK economy. do not forget to include the 20% who have gone underground because they have had their indefinite leave to remain refused/revoked so they have to beg and steal to survive-all this has a major effect on the economy with police work and insurance claims and so forth. muslim women have been told they can claim for up to 10 children-which they will be happy to do. as you don't need to be a scientist to work this one out i won't hold my breath for the e-mail. it's a no brainer isn't it?. i do not doubt that there are some immigrants who are skilled and have legitimate jobs-but the negatives in this situation far outweigh the positives. within ten years there will be a civil war in this country. and the blame can be laid squarely at the door of ten downing street.
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