Lloyds, NatWest and Barclays made £30 billion between them last year by exploiting the gap between the rates for savers and borrowers, City experts say.

Since 1989, water companies have been the subject of over 1,100 criminal convictions, but governments are content for them to control the industry.

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Hundreds of millions were wasted on contracts with zombie companies which vanished before any taxpayers' cash could be recovered