Of course, you are going to a new place and not all of us are blessed with family members or relatives that we can rely in abroad. This question bugs a lot of international students and are worried if they have to spend their first few weeks in the street or a park bench.
Accommodation has to be managed prior to entering in the UK; there are usually two options – On campus accommodation, or private accommodation. Dormitories with bills included (electricity, water and internet) are available in the University itself, while flats or apartments can also be pre-booked. Some of the Universities also provide an airport pick up option for additional charges (So you don’t have to look for park benches anymore).