Compared to many other countries the UK is a bastion of fair play and transparency. I'm actually proud of our anti-corruption, anti-money laundering and anti-bribery record.
Edam, agree that it's not just corrupt officials in local jurisdictions. But I do reserve the worst of my ire for them because IMO they do the most actual harm to the local economy and hence the local people.
I care very much if a dictator decides that he needs a state of the art weopons system instead of better healthcare - because he's going to go ahead and get it by hook or by crook, and the fact that one Westerm engineering company offers him a bung to get the contract ahead of another Western engineering company isn't the biggest issue problem.
I care even more if a local business registrar demands a bung before he'll register a new business, because it means that local people can't start their own (legal) micro-businesses and so either no economic activity takes place or it all happens on the black market.
I care a little bit if a Western company bungs a corrupt local official to get permission to build a factory or dig a mine. The reason being that (i) the involvement of the Western company brings jobs and hence wages to the local economy that wouldn't otherwise exist; and (ii) contrary to common-sense, with the notable exception of oil, all the evidence suggests that Western companies build more environmentally sound infrastructure in the developing world than in the developed world. The reason is that the most polluting factories tend to be the most high-tech ones, and those are generally situated in the West due to greater stability and a highly educated workforce. Business accepts the "downside" of greater regulation in return for the above advantages.
I also reserve 100% of the blame to secrecy jurisdictions that allow corrupt governments to set up bank accounts offshore and salt off personal fortunes. It has to be said that the Channel Islands and Switzerland now have regimes in place that prevent this from happening - and Switzerland in particular has done a sterling job at freezing assets from overthrown dictators from the "Arab Spring". The real problems are in the Far East and the West Indes.