The main key to growing hot chillies in cold climates is apparently temperature and humidity. Chillies hate the cold! 'The hotter the chilli, the more temperature dependant it is and the longer it will take for the seeds to germinate and the plant to grow to harvest time'. I also want to say thanks to everybody who has contributed to this project in the comments section below. It has been a real collaborative effort!
So, after some very extensive scientific research, here are my complete results:
with liquid food suitable for tomatoes, especially if the leaves start to look a bit pale in colour. The maximum temperature should be 36 degrees C and the plants do enjoy high humidity. The minimum temperature is 16 degrees C so think carefully where the plants should be kept, especially with regards to night time temperatures. In cold climates it's generally going to be a glasshouse, poly tunnel or conservatory and it may even need to be heated/insulated during the night time.
The harvested fruit can be stored very effectively in the freezer and most of the plants themselves can be treated as perennials, with some pruning needed in the Winter season. Dig the plants up, put them in pots and move them to somewhere warm and sunny and free from frost. Next season they will grow back stronger with an earlier and more abundant harvest.