William Paul Aitken

Part of Tetra Tech, Inc., RPS Environmental Management Ltd. is a leading professional services firm that defines, designs, and manages projects across 6 sectors: property, energy, water, transport, resources, and government. The company is based in Abingdon, UK. RPS supports efficient, safe, and environmentally responsible energy exploration and development, leading operations, processes, and technology for over 30 years. The British company, founded in 1983, prepares and delivers independent competent person's reports (CPRs) for transactions, annual reserves reporting, and valuation reports for financing.

Part of Tetra Tech, Inc., RPS Occupational Health Ltd. is a British company that provides occupational health services. The company is based in Abingdon, UK. Founded in 1999.