We currently have 250 field surveyors who contribute to the 10,000 changes taking place every day in our database. Thanks to them our master map of Great Britain is constantly, subtly shifting and changing. Luckily, the country is nothing if not varied, and not all of our surveyors are pounding concrete and worrying about urban canyons (the phenomena of being in an area so built up that satellite signals – can’t reach their GNSS kit). Some spend their days surrounded by sheep, not Starbucks. One such surveyor is Guy Rodger who looks after Shetland. Guy’s worked for OS for 30 years and spends an average of four weeks in Shetland every year and has to carefully plan his work to maximise his time there. I caught up with him recently to ask him some questions.