The UN corruption stats and rankings are based on perceptions as much as evidence, perhaps more so. So the type of corruption you're talking about factors in heavily.
In 2013 the UK ranked 14 out of 175, way behind the Scandinavian countries ... way above Spain, ranked 40th and with their scores worsening.
Unless you only holiday in fully inclusive resorts, the public perceptions of corruption are palpable when you travel abroad. You only have to scratch the surface to find how rotten the underbelly is. As much as we love to whinge and moan about life in the UK, there's plenty worse places to live.
I lived in Colombia and Venezuela where bribery and corruption are in your face if you want to get anything done - and I preferred it.
There's something refreshingly honest about people telling you how much it will cost to achieve an end result. Not least because you get exactly what you pay for and usually by the time agreed.
Yep, it's not fair and equitable but then neither is attempting to get planning permission from Kettering Borough Council.