You are on a roll, John. THEY LIVE is also hot! Bravo! I have a CARRY ON poster I either recently shared or will be sharing soon. (Actually, i just checked. I'm NOT sharing it until Easter.) It's one you don't have...and not a quad. It's my first CARRY ON, actually. They are not as well known here in the USA. But the SCREAMING one has really got me interested. Bravo--and again, welcome!
I have to admit the UK quad for "They Live" has grown on me more & more since I've owned it, at first glance you can easily think the artwork is fairly basic, but, the more you study the poster there's a lot more going on than it first appears and lots of stuff captured in the poster straight from the film.
That's good to hear GoGo that my "Carry On Screaming" quad has got you a bit more interested in Carry On posters, I'm a lifelong fan of the Carry On series and have always enjoyed them, as with any film series there are a few dud ones, but, there are certainly more good ones than bad IMO and a few truly great Carry On films like for example Screaming, so there are plenty of good Carry On posters to pick from that's for sure, some of them are quite rare and hard to find though and some of the posters for the earlier Carry On films can be quite pricey.