Thérèse Coffey’s leaked memo to staff has resurrected an old debate about the Oxford comma (Coffey urges staff to be positive, be precise, and not use Oxford commas, 15 September).
As a clear writing coach, I am often asked for my advice on the Oxford comma. It is always this: if one will aid the clarity of your sentence, you should use it. If it will not, then leave it out.