Best environment?

Hi friend! UK's climate may be okay-ish with the amount of light in autumn but you must think temperature and humidity! Window areas are usually very cold compared to the rest of the interior, especially when temperatures outside are dropping. Extra moisture is also an issue - the greater the temperature difference, the more in the air. Basically it will be possible to grow but your plant will be rather miserable. I would strongly advise agains outside grow this late - your plant will develop very slowly and rapid temperature changes will not help it either. If you want to give it a shot and expect satisfying results, you should aim for either a greenhouse or a grow tent. Good news is that you can get a relatively cheap setup if all you want is one plant. You only need a basic light, a small tent and a tiny extractor fan. Depends on your budget, you can get the whole set for about 100-150 pounds. On the other hand if it is just recreational - enjoy it the way you like it!