The Metropolitan Police has spent £10.6 million on translation services last year.
The record high figure could pay for hundreds of officers have risen sharply as immigration increases.
It's the equivalent of nearly £30,000 a day.
Languages Scotland Yard had to translate include Urdu, Slovak, Russian, Portuguese, Czech, Bulgarian, Arabic, Farsi, Kurdish, Lithuanian, Polish, Punjab, Romanian, and Gujarati.
The Taxpayers Alliance said:
"If we encouraged more people to learn English when they came to Britain there would be a sizable saving as well as a great benefit to social cohesion."
Third not born in UK - Rape figures
Latest figures now show almost a third of London's near 8million inhabitants were born outside the British Isles.
A staggering 255 non-UK citizens from 71 different countries were charged with rape in the capital last year according to a Freedom of information request.