By Julia Banim Hobnobs are a favourite biscuit among tea-drinking Brits, but do you know how the crumbly wonder got its name? A number of viewers were taken by surprise after tuning into Channel 4’s The Secret World Of Biscuits, which delved into how distinctive Hobnobs managed to ‘stay ahead of the pack’. The programme explored the origins of the moreish bikkie, which first hit supermarket shelves back in 1985. Hobnob mania led to rapid expansion and – to the delight of sweet-toothed customers nationwide – the birth of the majestic Chocolate Hobnob in 1987. Of course, no matter how delicious …