Make it mandatory for all clubs in the UK to provide a simple, easy and fast drug test for drinks, e.g. straws that change colour when a drug is added or coasters react to the presence of drugs.
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With the rise of not only drink spiking but the injection of needles the Government needs to actively do something to help women in clubs, and make them feel comfortable rather than in fear all the time. If these became mandatory I think the drink spiking could be reduced massively, and then as a country we can tackle the injections.