Ah - Hain. That rabble-rousing POS who initiated all the anti-South African rubbish (including the Stop the Seventy (Cricket) Tour) when I was at University....
If it's come from him, it will truly be bolleaux....or 'bllchs'?
Interesting that the aritst's sketches don't show the grey, horizontal rain sweeping up the Bristol Channel for which RAF St. Athan is infamously known.