Working for yourself has never been so popular. According to figures from the Office for National Statistics, there are around 4.8 million self-employed workers in the UK. Whilst many of this number are young people seizing the opportunity to go it alone, some are in their 50s, 60s and even 70s. Being your own boss has many advantages, including the freedom to choose what type of work you do and when and where you do it. But it does mean…