A Bachelor of Science is referred to as a BSc and BSc (Hons).  In the UK, except Scotland, an honours degree is completed over a three-year period. It represents a considerable investment of time and money, but nevertheless provides substantial opportunities in the modern world.

In Britain and Ireland, as in the United States and Canada, a Bachelor of Science is typically awarded upon the successful completion of an undergraduate programme in one or more fields of the sciences. The completion period for the degree varies according to the nature of study, as, for example, on-line study than direct study at a university.

As with the BA, t he top students are awarded a First Class degree, the next best, an Upper Second class degree (usually referred to as a 2:1), followed by a lower second class degree (usually referred to as a 2:2), while those with the lowest acceptable marks gain a Third Class degree

The Bachelor of Science with Honours degree comprises one full-time year of coursework that includes a research component. Students are admitted to the BSc (Hons) programme following the completion of a Bachelor of Science degree with a high level of achievement in their subject area.