Thanks muchly, BossEyed - I hadn't come across Sir H in this guise before. He's good, isn't he - although you might feel that it's easy for me to say that, but you couldn't possibly comment
I couldn't get your linky thing to work though. Here's another attempt.
https://thinpinstripedline.********.co.uk/
Ok PPRuNe, you win. But if you google
thinpinstripedline you'll find it. As of today, it's still the top blog.