If you have traveled from a country that does not have a travel corridor with the UK it is a legal requirement to self-isolate for 14 days in your room. Only after that time has elapsed may you interact with the group in person. An up to date list of countries that DO NOT require self-isolation currently can be found on the UK Government website.
It may also be necessary for you and your flatmates to self-isolate in the event that one of you develops symptoms of Covid-19, or tests positive for the virus, at any point going forward.
Whether self-isolating or not you must follow Government guidance and not mix with other household/flat groups in the accommodation. Having visitors or guests is not currently permitted, and this rule also applies in situations where a student is in a relationship with another student in a seperate flat.
For more student guidance and information on the University response to Covid-19, please visit the Covid-19 student information page.