Which unwritten moral rule do you reckon Brits actually live by most?

Whether someone's just had a bereavement or a burst pipe, the kettle goes on. Refusing to offer tea is basically a war crime in these parts.

Pushing in front of someone waiting for the bus is arguably worse than tax evasion. We'd rather miss the train than commit this cardinal sin.

Bumped into by a stranger? You say sorry. Trodden on by a shopping trolley? Sorry again. It's less an apology, more a national reflex.

Ducking out when it's your turn to buy is a betrayal that will be remembered for decades. Even your grandkids will hear about it.

Meal cold? Service dreadful? Just mumble 'lovely, thanks' and stew silently. Complaining out loud feels almost indecent.