If anyone has seen the Yorkshire tea advert with Sarah Lancashire in it, can they please explain it to me. A woman office worker goes to the cupboard at tea break and basically declares that her biscuits have been nicked. Sarah Lancashire, who is playing a security guard, happens to overhear and proceeds to question everyone in the office. It then transpires that it was the original woman (the owner of the biscuits) that had in fact eaten them all and the wrapper was found in her bin. So why did she say they'd been nicked? Was she trying to stitch up her colleagues? Was she just being forgetful? What's the deal?