Really? Pathe is the first cinema I ever went to that had a intermisson, and Vue over here does it as well. I'm actually quite happy about it. Especially with the Marvel movies. Halfway through, little break, me and my MCU-geek I always watch these movies with geek out over stuff that happened sofar.
A regional thing, perhaps?
Or time of day. I usually only go mornings or afternoons, not evenings. Probably not enough paying customers to justify stretching the time out for an intermission?