So let me get this straight government immigration figures aren't based on a count of people entering and leaving this country even though they check everyone's passports as they enter and leave. They are based on a random survey of passengers ?!
From the BBC:
But the MPs warned that current net migration statistics produced by the Office for National Statistics (ONS) and the Home Office were "blunt instruments" and were "not adequate for understanding the scale and complexity of modern migration flows".
In particular the MPs criticised the main source for producing migration figures - the International Passenger Survey (IPS).
It was designed in the early 1960s to examine tourism trends - something it is still used for today - and is based on "random interviews" with travellers at ports and airports.
The Public Administration Committee said just 5,000 migrants a year were identified through the survey and it had a "large margin of error".
Scrap government, it's not fit for purpose. Even better, lamppost meet rope. Geez!!!