Combined with low taxes and sensible regulation, it remains the most effective mechanism for creating wealth and spreading opportunity.

This would be a crude but effective mechanism.

But scepticism persists about whether the deal will hold, amid concerns that no effective mechanism exists to police the cut.

City observers are increasingly confident that this will prove an effective mechanism for kicking it into the long grass.

The project has been also serving as an effective mechanism to find and train talented young conservation professionals and activists.