Oh mean Prongsi! Well I am a current BASc (Bachelors of Arts & Sciences) student so I can cover some of your questions.
1. Workload - Depends on what modules you take, since you pretty much have a selection of much of UCL's modules you can have one term busy and one term free. This term I have 5 modules Physics, Engineering, Maths, Japanese & Approaches to Knowledge. Next term is Law, Quantitative Methods, Research Methods and Japanese. Having all your science ones in one term is a bit tough. Plus for the core modules much of your learning is done home via lecture videos and assignments, so you have to watch lectures before class. This means that some people say that BASc is worth 1.5 degrees time-wise because of the different types of subjects you study and the innovative way of teaching. But if you're good enough you should be able to handle it which links nicely onto the next part,
2. People - A diverse range of high quality candidates, obviously it being UCL you would expect strong candidates to apply, but honestly I would say that these students are some of the best and most motivated students you can find at UCL (even though I am biased, but then again I have been around UCL for 3 years now and have studied a previous course, so maybe not so biased).
Hmmm it's only been a few weeks since I started so I don't know what else to say. Oh we have the newest common room in UCL and by far the best, it's MASSIVE compared to other departments with it's own conference room (fitted with widescreen tv) computer stations, sofas and kitchen. Plus the staff are very responsive, any queries you have are answered almost immediately and they really go far to accommodate you. So much so that they are taking us on an all-expenses paid trip to Windsor next month. Anymore questions just post them up and I'll try and answer them