With shortages predicted on our high street and Christmas cancelled last year, we all deserve a luxurious yuletide blowout. Sabrina Grant and Sophie Morgan show how we can indulge with luxury products without breaking the bank. Brand insiders spill the beans on what really goes in to our Christmas favourites, and reveal how to get a half price turkey, the secrets behind supermarket champagne, the perfumes that smell just like Chanel but cost 85% less, the High Street cashmere that beats Ralph Lauren in an industry standard test and the best buys on everything from gin to smoked salmon, cheese to Christmas pudding.