Hi, i want to do a PhD in scientific research as i want a career in research work. I know a PhD will help me get further up the ladder in my career, but what exactly are the benefits of doing a PhD rather than getting a research job straight after university? Thanks for advice.

If you want a career in research, then a PhD (or at least a higher research degree such as an Mphil) is more or less essential, especially if you want an academic career. The PhD is a period of research training in which you will develop the skills you need to become an independent researcher.