There'd definitely seize the lot and bring new charges against them
As the warrant would no doubt allow a thorough searching of the entire property, and the stuff you mentioned would be contraband. Searching the entire house is part of 'looking for evidence of X', wherein finding evidence of Y is allowable.
( Labia Majora You keep on talking but it makes no sense at all, Wed 6 Oct 2010, 11:55, 1 reply, 15 years ago)

So you're authorised to look for, say, CAI, but nothing else?
You can only "look in one room" but not the whole house?
( Noeli overtheshoulderboulderholderthingstraplatchboobs, Wed 6 Oct 2010, 11:57, Reply)

I can look wherever in the hard disk drive
But I guess an example would be a copper raiding a house looking for stolen TVs but finds a bag of cocaine stuffed in the toilet cistern. You could argue why he was looking for a TV in the loo.
( Labia Majora You keep on talking but it makes no sense at all, Wed 6 Oct 2010, 12:07, Reply)

Aye.

( Noeli overtheshoulderboulderholderthingstraplatchboobs, Wed 6 Oct 2010, 12:10, Reply)