Adrian Stuart Brennan Dyball

Giffen Group Ltd. provides electrical, mechanical and civil engineering services. It offers electrical installation services to the railway industry and commercial and industrial development projects, as well as public bodies, such as governmental departments, NHS and HM prisons, and MoJ, electrical testing services and civil and building construction services, including fire stopping, platform extension works, copers and fencing and other services for railway, commercial and industrial sectors. The firm also engages in supplies, installs, commissions and maintains mechanical systems that comprise air-conditioning and ventilation systems and security and communications systems. The company was founded in 1909 and is headquartered in St. Albans, the United Kingdom.

Giffen Holdings Ltd. specializes in mechanical, electrical and power services within the railway environment, working for both network rail and London underground as well as a select number of train operating companies. The company is headquartered in St. Albans, the United Kingdom.

Part of Renew Holdings Plc, Amco Group Holdings Ltd. is a holding British company that operates in the construction, property development, and drilling services industries. The company is based in Aberford, UK and was founded in 2008.

Founded in 1957, YJL Ltd. is a holding British company under Renew Holdings Plc that constructs commercial buildings through its subsidiaries. The company is based in Leeds, UK.

Britannia Construction Ltd. provides construction services which include feasibility studies, cost advice, procurement and construction. It offers land remediation, civil engineering, rail infrastructure, nuclear decommissioning and structural refurbishment. The company was founded in 1960 and is headquartered in Cheltenham, the United Kingdom.

Amco Group Ltd. operates as a holding company with interest in construction, property development, plastics and drilling services. It provides construction, engineering, design, and project management services to the rail, energy, engineering, materials handling, utilities, ports, environment, waterways, local authorities, transport, and nuclear markets. The company was founded in 1970 and is headquartered in Aberford, the United Kingdom.

Amalgamated Construction Ltd. provides construction and engineering services. The firm creates and maintains assets for both public and private sector customers in the specialist sectors of rail and engineering. The company was founded in 1970 and is headquartered in Barnsley, the United Kingdom.

Kier Integrated Services Group Ltd. offers integrated support and construction services. The firm provides railway maintenance and utilities infrastructure services. The company was incorporated on April 14, 1989 and is headquartered in Sandy, the United Kingdom.

Part of Drillwave Ltd., Cheetham Hill Construction Ltd. is a civil engineering design and construction contractor that offers a full scope of services for projects up to £14,000,000 in value. The company is based in Bury, UK, was founded in 1966, and the CEO is Adrian Taylor. The British company engages with clients at the earliest stages of potential projects to fully understand their needs. Cheetham Hill Construction prioritizes sustainable construction and is committed to implementing sustainable procurement options, procuring timber from sustainable sources, and developing links with suppliers close to their sites. The company has experience using the WRAP Quality Protocol for the Production of Aggregates.

The Chartered Institution of Highways & Transportation is a professional institution that serves as a charity, learned society, and membership body. The private company is based in London, UK, and was founded by Kam Chun Pang. The British company provides resources related to road safety, resilience, and policy briefings for the highways and transportation profession and industry. CIHT Scotland supports career development, highlights and shares best practices in transport planning and engineering, and offers networking opportunities.

The Institution of Civil Engineers operates as a professional membership organization. The non-profit company is based in London, UK. and has subsidiaries in United Kingdom.

Eric Wright Group Ltd. provides construction and engineering services. It offers services from construction and civil engineering, to property development and facilities management. The company was founded in 1923 and is headquartered in Preston, the United Kingdom.

The Institute of Directors provides informative events and professional development courses. The non-profit company is based in Johannesburg, South Africa. Parmesvari Natesan has been the CEO of the South African company since 2010.