Guildford is a historic market town and the county town of Surrey, situated on the River Wey approximately 50 km south-west of central London. The town is renowned for its medieval castle ruins, cobbled High Street, the striking Anglican cathedral on Stag Hill and the University of Surrey. Guildford has a thriving economy anchored by retail, professional services, education and a notable cluster of technology and digital media companies, making it one of the most dynamic towns in South East England.