A bursary is an award based on financial need, which does not have to be paid back once you have completed your studies. There are requirements, both academic and non-academic, that must be fulfilled in order to be granted the award. To apply for a bursary at York, you must already have been admitted.
Bursaries and awards are granted on the basis of student financial need, with some consideration given to academic progress. Some awards will have additional criteria which you can find on the individual award descriptions.
Visit the Scholarships, Awards, and Bursaries site.