Good to support British brands especially if they're local
The Crystal is a good glass cleaner. Sometimes I slum it with Autoglym Fast Glass
I LOVE PB Natural Look. It's by far the best interior cleaner/dressing I've used (and there's been a fair few). You need to squirt it onto a micro fibre first, apply it, then buff off with a clean MF. Not as easy to apply as a spray but worth the effort. They say you can use a spray trigger with it but it's really too thick for that. It leaves absolutely no residue or smears and really restores a lovely oem matt finish to trim.
Like you, I don't really need another cleaner
but handy to have a spray for a quick once over in between proper cleans. I'm the kind of sad person that will get the cleaner out if I'm sat in the car waiting for something/someone.