Extra Fees
Agencies are notorious for charging you for extras. Don't be taken for a ride and find out all fees upfront. http://england.shelter.org.uk/get_advice/private_renting/costs_of_renting/letting_agent_fees_and_charges

Helpful Advice
http://www.rib.co.uk/management-professional/property-advice/the-students-guide-to-finding-accommodation