Salam.. How are you.. If I get admission in Pre-masters with single CAS , one year visa and after completing it can I enroll in masters and can I get extension in visa while staying in uk or I have to come back to my home country and apply from here ,???

sir I have 2 options 1 year MSC HRM or 2 year MSC HRM with advance practice so sir tell me which course is better for students ? I want to apply in 2 year duration HRM but I want to know will internship be guaranteed in this program ? Uslter university