Obvious no-regrets measures to take include cutting those subsidies that currently distort the choice of energy in favour of carbon-rich fossil fuels.

ECONOMIST: A cooling off period

Ajax are looking for a place in the Uefa Champions League quarter-finals, but Mido will play no part in their efforts - one of his biggest regrets.

BBC: Mido move scuppered

Everyone regrets that, no-one wants that to happen.

BBC: 'Unfair burden' of insurance law

That infamous sarong, which he was pictured wearing in 1998, was certainly one "eye-raising item" but as Newkey-Burden explains, Beckham had no regrets.

CNN: Beckham: The man who broke football's gay taboo?

Nilan is featured during the 90-minute documentary as a man with no regrets for making a living with his fists more than he ever did with his stick.

WSJ: Nilan documentary showcases hockey's fight game

"Barca have no regrets over Beckham, " added Soriano, referring to the 32-year-old's decision to join Real.

BBC: SPORT | Football | Europe | Beckham exit 'will not hurt Real'

There were no regrets at the end because people tried to do everything they wanted - some of them came off, some didn't - but Shane Williams' try sums up the way we want to play the game.

BBC: Gareth Thomas celebrates victory over Australia