Русско-англо-русский юридический словарь

A writ of execution (also known as an execution) is a court order granted to put in force a judgment of possession obtained by a plaintiff from a court. When issuing a writ of execution, a court typically will order a sheriff or other similar official to take possession of property owned by a judgment debtor. Such property will often then be sold in a sheriff's sale and the proceeds remunerated to the plaintiff in partial or full satisfaction of the judgment. (Wikipedia)

It would appear that the RSPB put a recording device on private land without the knowledge or permission of the landowner. The resulting film was then accepted by the sheriff as competent evidence and the gamekeeper was convicted on this evidence. On whose legal authority was the recording device so placed? Were the RSPB acting without (heraldscotland.com)

If you’re dealing with a Sheriff, there is a likeliness that they will come into your house. They will often have warrants that grant them access, and should you refuse them access, they are at liberty to use ‘reasonable force’ to gain entry. They will then levy items that they will sell to cancel out your debt. (Website of Council Tax Advisors CIC)

The executory formula is a sort of commandment addressed to sheriffs and the public force; it alone permits execution, seizures, and in a manner more general the employment of force to obtain justice. There are only two sorts of acts which can be clothed with this formula which, by virtue thereof, become executory titles; they are the "grosses" of judgments and the "grosses" of notarial acts (Wisconsin international law journal)