It sounds like you were visited by a Court bailiff. Firstly, you are under no obligation to let them into the property so you have no need to get involved if this makes you feel uncomfortable (I think it is wise you do not get involved anyway as you state). Secondly, bailiffs are only permitted by law to enter property �peacefully�. This means either by being invited into the property or by entering through an unlocked door or open window. They are not permitted to forcefully enter property (e.g. breaking down doors or smashing through windows), contrary to what many people seem to believe.