Re: Good for them
"They absolutely can come in to your house without a warrant, using their power under s17 PACE, among others."
As far as I'm aware, PACE allows police entry without prosecution for trespass under the following circumstances - s.17(1) (e) empowers the police to enter a property for the purpose of “saving life or limb or preventing serious damage to property.”
I'm not even going to attempt to imagine a situation where a search of someone's drawers or underwear is likely to save life or limb...