Andrew Gillespie

Tetra Tech UK Consulting Group Ltd. engages in the provision of project management and technical consultancy services. It operates through the Consultancy Services and International Development segments. The Consultancy Services segment includes Infrastructure and Built Environment, Programme and Project Management, Surveying and Asset Management, Environmental, and Planning and Transport. The International Development segment involves in building state of the art public transport systems and improved traffic management in developing cities. The company was founded on December 6, 1984 and is headquartered in Leeds, the United Kingdom.

Part of Tetra Tech, Inc., WYG Engineering (Northern Ireland) Ltd. is a consulting private company based in Belfast, UK. WYG Engineering (Northern Ireland was acquired by Tetra Tech UK Consulting Group Ltd., part of Tetra Tech, Inc. from July 10, 2019 on March 31, 1999. The British company was founded in 1987 and provides consulting services.

RPS Mountainheath Ltd. provides laboratory analysis services. The company is headquartered in Abingdon, the United Kingdom.

Part of Tetra Tech, Inc., Tetra Tech Management Services Ltd. is a British company that provides surveying services. The private company is based in Leeds, UK. Founded in 2003.

Tetra Tech Environment Planning Transport Ltd. provides environmental, planning, and management consultancy services. The firm provides consultancy services in designing, planning, engineering, environmental, transport planning, project management and social development. Its services include conservation management plans, design of investigations, procurement of services, contract management and monitoring, documentary research, provision of commercial historic environment advice to developers, public inquiries, public outreach, participation and events, building analysis and recording, characterization and appraisals, excavation, field evaluation, geophysical survey, measured and topographical survey, and watching briefs. The company was founded on April 26, 1995 and is headquartered in Leeds, the United Kingdom.

Signet Planning Ltd. provides planning and urban design services. It serves the business and industry, education and health, energy, leisure, sport, and tourism, minerals and waste, pub, restaurant, and hotel, residential development, and retail and economic planning. The company was founded by Simon Wallace Chadwick, James Edward Hobson, and Ian Reginald Rowe in 2005 and is headquartered in Leeds, the United Kingdom.

North Associates (Cumbria) Ltd. provides property asset management and planning consulting services. It specializes in acting directly for the landowner and asset holder, identifying, unlocking and maximizing the value of building and land assets, delivering planning permissions and disposal strategies to maximize speed of return, and managing projects from inception to completion be it to point of sale, acquisition, development or relocation. The company was founded by Andy Ross and Mark Walker in 2011 and is headquartered in Cumbria, the United Kingdom.

Part of Tetra Tech, Inc., Tetra Tech Group Ltd. functions as an investment holding British company. The private company is based in Leeds, UK and was founded in 2008.

Part of Tetra Tech, Inc., Tetra Tech Ltd. is a British company that provides engineering consulting services. The private company is based in Leeds, UK. Tetra Tech was founded in 1985 and was acquired by Amey Ltd from Tetra Tech UK Consulting Group Ltd. on July 01, 2010.