I personally think studying in UK is less stressful than HK, I even have more extra time allowing me to do things that I always wanted to do. The prep that my UK school give us is a lot less compared to HK, the maximum of the prep is only 5 pieces and these are always due after 2 days or a week.
The boarding life is very wonderful, the staff are very kind and helpful. The school organises many activities during the weekends, as well as special events such as the Christmas party. The most interesting activity was visiting a park which is similar to Ocean Park in HK, I had a lot of fun with my friends.
I do think I have changed a lot since studying in the UK, because you have to everything by yourself except for preparing breakfast, lunch and dinner. I also think I have improved a lot in English, by the way, I am very happy about going to UK to study.