• He said you have to have a front brake, I'm pretty sure the law states you have to have two independant brakes, not that they have to be on different wheels?! Ie a fixed with back brake is legal, a caliper and disc brake on the same wheel, so long as there are two seperate levers, cables and actual braking mechanisms...

    .

    True.
    Racing tricycles have double brakes on the front only:

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