I've done something similar to Green Magpie brought a couple of chilli plants and a pepper plant indoors. These were the plants with the least red chilli and peppers on to see if they'll ripen.
I'm guessing some varieties take longer to mature than others as all my plants were sown at the same time and grew in the same GH. Chilli cayenne have produced loads of long curly green chillies but few are red, Chilli Apache have mostly turned red and are beginning to dry out on the plant so I've cut the stem and it's hanging upside down in the GH drying.
My round peppers have been small and slow to go green - yolo wonder and Californian Wonder. Also grew a pepper which was long and thin, this one has produced good sized fruit and will be coming indoors if it doesn't start to go black in the next few days.
I'd be inclined to advise bringing in a coupe of chilli plants and see what happens, 2 plants are enough for any sized family, you have nothing to lose and they do look ornamental if strategically placed in the kitchen/dinning room or a conservatory.
If you have a lot of plants with green fruit on they will ripen if cut off at the stem and hung upside down in a warmish place and those that don't - just pick the dried red one's. I still have dried chillies stored for 2yrs and as red as the day they were picked, they will be composted this year