I admit it - I start this story by venting my spleen at the petty frustrations of modern life, particularly those aspects involving the Human Resources (HR or, better, Human Remains) parts of large corporations.

By the way, the title comes from signs widely deployed on certain stretches of British roads, usually in areas where it is difficult to overtake safely, wisely reminding the driver of the risks of rash manoeuvres, even though you’ve been stuck behind that blasted slow-moving caravan for miles.

For those with a taste for double entendre, there is of course another - and much smuttier - interpretation which I shall leave you to work out for yourself.

Oh, and did you spot the reference to Oscar Wilde’s novel, The Picture of Dorian Gray? I thought so.

Part 2