Portable Air Con - Window Seal (outwards opening)

Didnt even think inward opening windows was a thing, cant you vent it through the wall like a tumble dryer, might not be very portable then though

Get glass swapped with hole in. They can do that or drill hole through wall. Make sure it's the right size. I gave up on the window blocking off but tape and foam sponge is what I'd use but not very good

Ground sheet clipped to window frame edges (clipboard / bull dog clips)
Add a cardboard V to the bottom with hole to vent hose tru. (Use cable ties / parcel tape to attach cardboard)
+**Make sure hose long enough**+ first.

Open the sunroof

Without a link to the air con unit it's rather hard to say but normally they only seem to come with an attachment for sash windows not the ones that open outwards

I suspect you'll need to buy a generic window kit, there are loads on Amazon for £10 - £20 which work OK

I know the answer...it's called Walkers. Basically, you will not find a solution without sticking things on frames, but I found this works great without modifying or attaching things - and it's free (apart from buying a bumper box of crisps). Just some careful crafting and cutting with scissors and gaffer tape and you have a re-usable seal that fits in window jams - triangular bit on of window top cut out seals that and stuff your curtain in bottom in gap...

Anyone know if a trickle vent (vent top of window) would be enough ventilation for an air conditioner?
I saw one of these adaptors on amazon that might make it possible:
https://www.amazon.co.uk/gp/…h=1

Get a universal window kit off Amazon or do the same with cardboard - although it's important to seal carefully with cardboard or else you will just suck the warm air back in. As a temporary measure you can pack the gap with towels.