Our people are friendly, skilled and hardworking and are committed to delivering excellent service. They have a depth of knowledge and produce exceptional results for our clients. Our key personnel include:

Richard Allitt


Richard has more than 40 years’ experience working with many of the largest UK water companies and local authorities. With a background in Civil Engineering, project management and Urban Drainage, Richard has developed particular expertise in Hydraulic Modelling of Sewerage Systems and Rivers and 2D Modelling of Urban Flooding and is recognised as one of the leading thinkers in the urban drainage industry.

Martin Allitt

Managing Director

Martin is one of the company’s most experienced modellers, regularly presenting at various industry conferences and is well-known for his progressive thinking for hydraulic engineering and urban drainage.  His particular responsibilities are project management including technical development and overseeing the IT infrastructure within the company to ensure the company remains at the leading edge of technology.

John Hilson


John is a Civil Engineer with a BSc in Civil Engineering from Leeds University, he is a Chartered Engineer, a Member of both the Institution of Civil Engineers (ICE) and the Chartered Institution of Water and Environmental Management (CIWEM).  John has over 34 year’s experience in the Water Industry with various consultancy and utility companies.  Prior to joining RAA in August 2018 John was Divisional Director for a leading consultancy, responsible for over 80 staff delivering the wastewater infrastructure programmes for United Utilities and Severn Trent Water.