Use the link below to make Freedom of Information requests of any authority you want. Ask the CPS how many non whites they have charged with racism, how much they spent on interpreters, how many white people have been charged with hate speech etc ask Border Agency how much they spent on interpreters, how many illegal immigrants they have arrested/deported etc. Ask hospitals how much interpreters cost, how many foreign nationals they have treated etc. The world is literally your omlette here. Try and make requests unique, or you will get a stock response. Ask to see documents relating to their finances. The harder it is to get the info for you the more money it will cost them and the more time consuming it will be. Fill your boots. Its piss easy to register and its easy as sending an email. Just search for the agency you want and get requesting. The true picture of how much immigration is costing this country becomes apparent when you look through the existing answers.
Get on it people