Advisory services relating to the construction of civil engineering structures; Advisory services relating to the construction of mechanical engineering structures; Advisory services relating to the repair of civil engineering structures; Advisory services relating to the repair of mechanical engineering structures; Civil engineering (construction and maintenance); Civil engineering construction; Civil engineering consultancy (construction and maintenance); Civil engineering demolition; Construction engineering; Electrical engineering services (construction); Hire of machines for use in civil engineering; Marine engineering (maintenance); Mechanical engineering services (construction); Project preparation relating to civil engineering; Project preparation relating to construction engineering; Structural engineering services (construction); Underground civil engineering services; Electrical apparatus installation; Electrical apparatus repair; Electrical installation services; Electrical wiring services; Installation of audio electrical apparatus; Installation of electrical apparatus; Interference suppression in electrical apparatus; Maintenance and repair of electrical apparatus; Maintenance, installation and repair of electrical items and equipment; Repair of electrical appliances; Residential, commercial and industrial installation and repair of electrical and computer wiring and cabling