Ahead of National Stationery Week, 25th April, firm believers in the written word and stationery experts, Pen Heaven, are on a nationwide hunt to find Britain's biggest stationery obsessive. With comedian Sarah Millican and author Jill Mansell confessing to their love of stationery, and Peter Jones carrying his trusty Yard O Led Viceroy wherever he goes, it appears many of us Brits share this common admiration, with hardcore fans flocking to National Stationery Week in their