Official figures from police forces across England and Wales shows how immigrants make up a large proportion of those arrested for major crimes.
A total of 91 foreign nationals were charged with murder and 406 accused of rape last year.
In London, of the 547 people charged with rape in the past 12 months, 174 were non-UK citizens.
They included immigrants from Afghanistan, Angola, Ghana, Macedonia, Russia, Zimbabwe and Chile.
Kent has the highest proportion of foreign murder suspects with 53 per cent being non-UK citizens, including four people from India and three from Romania.
In South Yorkshire, of the 22 people charged with murder, six were non-UK.
The figures, obtained by The Sun newspaper under Freedom of Information rules, raise serious questions over the Government's immigration policy and the need for tighter controls.
The nations whose individuals were charged the most frequently with rape in the capital were Jamaica, 19 suspects, Nigeria, 11, Poland, ten, and Australia, nine.
Also in London, a total of 197 people were charged with murder - including 40 immigrants.
Euro-MP Gerard Batten, UKIP's home affairs spokesman, said: "It bears out the public perception that our open door immigration policy doesn't just attract decent migrants but serious and dangerous criminals."
A UK Border Agency spokesman said last night: "We will always seek to deport any foreign criminals - and in 2011 we removed over 4,500 foreign national offenders."
