The media are just being idiots, trying to grill on every minutia which often isn't relevant. Window cleaners in my area have been coming to clean street windows from outside all week. Obviously they aren't allowed inside the home just yet because Borris has generally only eased external, public spaces.
In events window cleaners were to only able to clean the external windows (I didn't even know window cleaners offer an internal option, thought that's up to the occupant), they just charge their price accordingly. A redundant shit question from the media that can be better used elsewhere.