Commercial Gas Specialist Engineers 7 Services UK Ltd offers an extensive portfolio of specialist gas engineers to provide commissioning, repairs, maintenance services and advice for both commercial and domestic customers. From repairs, commissioning, servicing and planned maintenance, our engineers have the experience and training to complete your project in this specialised field. Commercial, Industrial Gas Boiler and Heating Repairs Commercial Gas Commissioning and De-Commissioning Commercial Planned Preventive Maintenance Domestic Boiler Service and Repairs