The business plan lists the key input and impact indicators. Input indicators show the full costs of these activities. Impact indicators measure the extent to which policies and activities are having the intended effect.
General statistics on immigration are in the migration statistics collection.
Statistics on UK Visas and Immigration and Immigration Enforcement’s performance against targets can be found in the migration transparency data collection.
The Border Force data for April to June 2014 can be found on the migration transparency data page.