"When you're messing around with probation, it's a game of cat and mouse, " he says.

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"It's like a game of cat and mouse to see who can win, " he says.

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It's a deadly game of cat and mouse.

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The committee said HMRC was involved in a "never-ending game of cat and mouse" with the big accountancy firms over the issue, and added that UK tax law was "hopelessly complex and outdated".

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Then, they started blocking us, and it was a cat-and-mouse game the rest of the summer.

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But, as toxicologist Dr John Ramsey explains, the authorities are locked in a cat-and-mouse game with dealers of these substances.

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