High Court Enforcement Officer without a levy, his POWERS OF ENTRY are the same as a common debt collector.

An HCEO cannot even set foot inside your front door without your permission - Section 7 of the Law Of Distress Amendment Act 1888 and Rai & Rai v Birmingham City Council [1993].

They are not certificated bailiffs, but they CAN levy on goods outside your property including your vehicle. 

HCEO's believe that by issuing a Form 55 notice of seizure gives them a right to return later and break into homes to recover the goods listed on the notice. This is not true.

A regulation 15 walking-possession agreement must be signed by the debtor otherwise the HCEO becomes liable under the Criminal Damage Act 1971 if he breaks into a property without a valid levy over goods inside. Khazanchi vs Faircharm Investments

And if the walking-possession agreement has been signed by another person without the debtor's knowledge or permission, the levy is invalid Lumsden v Burnett [1898] 2 QB 177.

See checklist to see whether the levy is valid and there is a further list of case law an HCEO must comply with when levying distress.

If an HCEO issues a Form 55 notice of seizure and leaves the premises without taking the goods, it becomes an abandoned levy, otherwise he can leave a person on the premises until the goods have been removed. This is called Close Possession and is rarely done these days.

There are lots of further case law on powers of entry without a valid levy.