Much of the seized cocaine is found to have been cut with phenacetin - a pharmaceutical drug banned some years ago in Britain and most other nations for causing kidney failure and cancer.
Other drugs used for cutting or "bashing" cocaine include lignocaine (a dental painkiller), tetramisole (used for de-worming pets) and boric acid (used to kill cockroaches).Not that such revelations are likely to dampen demand for what is essentially Britain's national drug. After all, the risk of an agonising death from cancer hasn't put many people off bacon, and cocaine feeds into the celebrity-obsessed, superficially success-oriented bling culture of Blatcherite Britain; and even if people know that the £2.50 line of coke they do is unlikely to be like anything their footballer/WAG/indie-star idols touch, suspension of disbelief is a powerful thing.
The problem, of course, is that cocaine is, by definition, sold by criminals, and there is no incentive for anything remotely like fair dealing. One answer, of course, would be to legalise cocaine and regulate it as stringently as alcohol and tobacco are. As soon as that happened, coke dealers would go the way of bathtub gin merchants and the quality and reliability would go up; Waitrose would carry organic, fair-trade cocaine from day one, and for those on a budget, £3.79 would get you a line of Tesco Value coke (3% purity, but cut with thoroughly innocuous substances). Lidl would undoubtedly come to the party with a janky-looking faux-authentic store brand; "Medellin Hills", perhaps, or "Mr. Montana's"?
Of course, legalising drugs is the sort of thing only somebody with an excess of common sense would advocate, and there is no way that it would ever happen in the real world. Thankfully, there are other, more politically viable, possibilities. Given that the majority of the active ingredient in street cocaine is not actually cocaine but various tranquillisers (hence the feeling of numbness which many naïve cokeheads assume as proof of the drug's authenticity), the next logical step would be to do away with the illegal substance altogether and sell perfectly legal pseudococaine. It'd have the right colour, texture and consistency for doing a social line at a party, would function excellently as a prop for one's fantasies of celebrity glamour, and would even give one a mild buzz, though would contain nothing more dangerous (or illegal) than a few stimulants and tranquillisers, heavily diluted.