Taxi Hailer - flash a cab

Don't literally flash a black cab, there are rules against that sort of thing! Instead, pick up a Taxi Hailer. It's a palm-sized LED gadget that flashes red when activated and enables the cabbie to see your outstretched and very hopeful palm. Just remember it's an aid, not a guarantee, and needless to say, you should only use licenced cabs - £9.99

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