And where is it still light at 22:00hrs (10:00pm) outside, at any time of the year, in Britain? Extreme northern Scotland maybe…

Not as extreme north as you think. Sunset in Glasgow this week is around 21:10BST. By the end of June (solstice) it will be around 22:07BST staying light until well after 11, and sunrise around 04:20BST, getting light well before 4.

At the winter solstice its a very different story, with sunrise around 8:45GMT and sunset at 15:45GMT.

Abolish all this mucking around with the clock.