WH Smith is launching an advertisement, timed for the back-to-school shopping season, once again starring Nicholas Lyndhurst playing each member of the Smith family. This time two new characters, Granny and Grandad, are introduced. The ad, through Abbott Mead Vickers. BBDO, is set at a school prize-giving where all the academic awards are won by just two pupils – Sam Smith and his sister Sascha (a character named after the agency account director Sascha Pearson). The ad, which aims to position WH Smith as the definitive store for back-to-school purchases, will be aired on ITV, Channel 5 and satellite.