The document summarizes key milestones and developments in the UK heat network industry since 2014. It outlines regulations and reports that have increased focus on the industry. It then summarizes Claire Perry's open letter to heat network operators, which recognizes the importance of heat networks and encourages operators to adopt Heat Trust customer service standards, in order to provide customers a service comparable to gas and electricity companies. Adopting these standards could help unify customer service approaches and prepare the industry for potential future regulation.