LSE GROUPS is a research exercise with a theme that is given to you. However, in some contrast to what students typically experience on other programmes, there is a far greater degree of flexibility involved, as well as a chance to research something closer to your heart.
For students studying courses like Law or Economics where they are unlikely to see many other topics, this is a good opportunity to break out of the classroom confines of your subject and academically involve yourself in a new area of study! You will likely interact in GROUPS with students from many other fields and have the opportunity to learn from them about what they do, as well as allow a confluence of ideas unlikely to happen during your studies.
Personally, as a student in the History Department, I found it quite interesting to see the way members of my group from quantitative fields approached data compared to how I did, and the different angles from which we analysed the same issue.
GROUPS offers a chance to test yourself and take advantage of one of the many (often overlooked) opportunities the LSE offers. It also allows you to interact with all kinds of other students whom you might not have met otherwise! I know that members of my group kept in touch for quite a while after the project.