I just completed my BSc Psychology and thought I'd offer some insight. Unfortunately a lot of work within the field will require graduate level study such as clinical psychology. Don't take my word but I believe if you don't take social work at undergraduate level, you may need to take a (shorter) graduate entry course in order to practice but double check that one. There are a lot of jobs out there which favour candidates with unspecified degrees so if you don't decide to go into further study you can still make use of your degree. From the people in my year (graduated 2015) a portion went right into graduate level study, some working a year before further study, some are doing work in care homes, some marketing, some retail. Personally I am looking to do the GDL (law conversion) which requires an undergraduate degree (usually 2:1 and above). My honest opinion, which I wish I was told before I started, would be to consider all your options if you do not plan to take it to graduate level. I'm happy to answer any questions you may have about the course!