What do VOSA checks on a UK car indicate ?

[tbgrowler]

Hi,

Could anyone please advise me why a UK car would have multiple VOSA checks on it?
I am looking at a few cars online for a car upgrade and some are coming up with info such as:

"VOSA states 33K, 45K, 54K....."

Is this an indicatioon that the car has been used for commercial vehicle purposes such as a mini cab?
Any service history mileage indicators on these cars do not always parallel the VOSA entries so it looks as though it is not directly related to servicing?

[vikingaero]

Some used car dealers like to embellish MOT checks as VOSA checks.

[steveo3002]

scabby driveway traders use it to trick people into thinking its some sort of service history when its not