Compared to traditional on-campus classes, online courses are usually more flexible. In addition to benefiting students with work and family obligations, this accessibility and flexibility can enable students to travel abroad while they take classes.

Yes. IF you mean studying online in your county on a course from a UK university. There are several. Many uk universities offer online courses such as kings college London, university of London and the university of Birmingham.

There is nothing such as tuition free universities in the UK for international students. However, one can apply for fully funded scholarships, grants or bursary which can eliminate or reduce the tuition fee or other expenses.