Robin Walker is a first-time author with Oxford University Press. Born and educated in Newcastle-upon-Tyne, he completed a degree in Chemistry before training to teach secondary school science. Since moving to Spain in 1981, he has been involved in English language teaching and teacher education, working in close collaboration with the State Teachers Centres, the University of Oviedo, and OUP Espana. A lecturer at the University School of Tourism of Asturias for 22 years, he recently set up as a freelance teacher, teacher trainer and materials writer. Keith Harding worked in language schools in Brighton and International House, London, before joining St Giles International where he has worked as a teacher, teacher trainer (CELTA), Director of Studies, and, since 1994, as Principal. He has worked at both the London Highgate and San Francisco centres. He completed his RSA Diploma in 1985, and has taught all levels and aspects of EFL.