Successful applicants are admitted as students for the MSc in Software Engineering or the MSc in Software and Systems Security. To graduate with an MSc, you must complete ten courses, undertake a project, and submit a short dissertation; for the Security MSc, the majority of these courses, and the project, must be on topics in security.
You should aim to complete the MSc within four years. If you find that circumstances prevent you studying for a while, you can ask for your student status to be suspended: this allows you to stop the clock for up to a year. If you come to the end of four years, and you still need more time, then you can ask for an extension. In either case, if you're making good progress, then your request will normally be granted immediately.
If you need to withdraw from the Programme for any reason, then you may be eligible for the award of a Postgraduate Certificate or a Postgraduate Diploma. For the Certificate, you need to have completed four courses; for the Diploma, eight. The Certificate and Diploma can be in either Software Engineering or Software and Systems Security—for the latter, the majority of courses taken must be on topics in security.