A fifth of rape and murder suspects in the UK last year were foreign nationals.
Figures showed a total of 93 people were charged with murder and 632 with rape.
The statistics of suspects born abroad compares to the overall numbers of 555 murder suspects and 3,436 murder suspects.
In Suffolk, 75 per cent of suspects charged with murder were immigrants.
More than a third of the 210 rape suspects charged in London last year were immigrants.
POLICE FORCES WITH HIGHEST PERCENTAGE OF MURDER SUSPECTS BORN ABROAD
Suffolk: 67 per cent (6 out of 9)
Cumbria: 63 per cent (5 out of 8)
Hertfordshire 60 per cent (3 out of 5)
Humberside: 50 per cent (1 out of 2)
Wiltshire: 43 per cent (3 out of 7)