Established in 1924, we remain an independent partnership specialising in mechanical and electrical building services with offices in Liverpool, Leeds and London. Through the active involvement of the Partners and the employment of high calibre Engineers we work to maintain the highest technical standards; provide the most exacting attention to detail in design and offer the greatest value for money. Ernest Griffiths' expertise covers the full range of mechanical and electrical services in buildings and facilities. This includes air-conditioning, ventilation (mechanical and natural), heating, piped services, lighting, power, controls, communications, fire and security systems, lifts, etc. We also act as Expert Witnesses on both mechanical and electrical engineering disputes.

Hannan Associates is an engineering consultancy formed in 1983 to provide MEP Design Solutions to the Construction Industry. We deliver projects valued in excess of £500m with national and international design teams. We work in a range of sectors with projects of varying sizes, providing us with good market resilience and an exceptional breadth of track record and design competence. We pride ourselves on delivering our service with a higher level of personal attention than larger competitors but providing a comparable strength of management, process discipline, expertise and creativity. The company adopts a highly collaborative and sharing approach to projects with the goal of achieving well integrated high performance buildings.