More than ten years in the making, this is a compilation of 50 of the most common errors in written English made by native Spanish lawyers, consultants, marketing and all kinds of other professionals. Test yourself against real-life examples taken from business emails, presentations, contracts, memos, court submissions, angry letters and countless other documents drafted in English at firms in Spain. Follow a step-by-step guide to avoiding these mistakes and impress the world with vastly improved English. Also contains: tips on writing in plain English, the worst offending false friends in business English, some famous quotes to make you think, and mostly unfair comments on the author's home football team.