Profile: M Bielby Ltd. is a provider of heating, ventilating, and mechanical engineering services. We cover installations, repairs, maintenance contracts, and servicing for the local authorities, schools, offices, industrial, and commercial establishments. Our services include maintenance and breakdown service, fully planned preventative maintenance, mechanical heating contracts, emergency repair service, and energy conservation measure services. We also offer installations, ranging in size from the installation of additional radiators, to complete heating systems. We provide control systems.