Yes, letting agents are regulated by various bodies such as the National Approved Letting Scheme (NALS), the Association of Residential Letting Agents (ARLA), and the Property Ombudsman. These bodies ensure that letting agents adhere to certain standards and codes of practice, and provide a complaints procedure for tenants and landlords. Letting agents must also comply with various laws and regulations, such as the Consumer Protection from Unfair Trading Regulations and the Data Protection Act.