"People with hybrid skillsets, such as technology and project management skills, are likely to be in demand and workers will need to continue training to develop new skills throughout their careers".
The Labour Market Story: Skills for the Future (UK Commission for Employment and Skills, 2014)
For some careers (such as certain roles in STEM fields, or a research post in industry or education) further study beyond a first degree may be a requirement. But even in professions where postgraduate qualifications are not essential, doing some advanced study can help to propel your career forward – for example, if you want to take on greater management responsibilities or work at a more senior level in your chosen field – and increase your earning power. Postgraduate qualifications can also support a complete change in direction and help to give you the competitive edge, particularly when combined with workplace experience.