Very closely behind sherbet lemons in the boiled sweet stakes for pure sugary toothrotting goodness. They're along the same basic principle as the sherbet lemon, except that the exterior purports to be lime-flavoured, and the interior - instead of being filled with sherbet - is, you guessed it, chocolate. Unlike dime bars, and more closely resembling armadillos; crunchy on the outside and smoooooooooooooooth on the inside.
Can be obtained at most good British confectioners' and newsagents'. Chief Medical Officer's Warning: Eating when pregnant can lead to the growth of your baby.