[mtrimpe]

The comment was actually based on experience in the Netherlands; which has similar if not stronger employee protection than the UK.

If your case is as clear-cut as the one in this article you might indeed not need a lawyer but if there's any wiggle room; if it's discrimination and not harassment and the accused is sufficiently important to the company and HR judges that you might not have the energy to file a lawsuit etc. etc. etc. then it's still very easy to end up getting kicked out of the company.