Road closed flooding

Our Range of Services

For organisations that need high quality urban drainage advice, Richard Allitt Associates has the breadth and depth of knowledge and technical expertise to help. Our team of specialists brings industry specific knowledge of the latest practices and emerging issues. We stay closely attuned to our clients' varying needs, working in partnership with them to help achieve their objectives. We specialise in flood risk assessments, urban flood forecasting, surface water and drainage management plans.

Our Services

Flood Risk Management

Flood Risk Assessments are now commonplace in planning applications and Richard Allitt Associates Ltd provide clients with a tailored service to meet there requirements and situations. Read more

Hydraulic Modelling

Richard Allitt and Richard Allitt Associates Ltd have been at the forefront of hydraulic modelling of sewer systems for over 20 years. Hydraulic models are a useful tool in testing "what if" scenarios and developing sustainable, cost efficient drainage schemes.Read more

Urban Flood Forecasting

Being able to forecast urban flooding in real time is a challenge but it is an area where Richard Allitt Associates are especially skilled. Advances in computer simulation & hardware have made real-time urban flood forecasting a reality. Read more

Expert Witness

There are few advisers who can provide in-depth urban drainage advice - Richard Allitt can. Read more


We offer independent advice and recommendations to help maximise the effectiveness of your drainage systems and the return on your investment. Read more


As a partner of Susdrain we are at the forefront of developing sustainable schemes and assisting planners, developers and local authorities with both new schemes and retro fitting existing ones. Read more

Remote Aerial Surveys                  remote aerial surveys

Our highly skilled pilots offer technical high quality topographic and thermal surveys by combining the latest advances in Unmanned Aerial Vehicles (UAVs) with ground-breaking uses of imaging equipment.Our expertise in surveying, environmental consultancy, GIS and remote sensing make us the perfect choice for fulfilling all your aerial survey needs. Read more

Remote Simulations            

Hydraulic models are important decision making tools and as such the ability to run simulations fast can be of great value to the end user. Richard Allitt Associates Ltd are able to offer "rsim" which allows the remote use of their fast simulation machines to undertake fast simulations using InfoWorksTM ICM. Read more


UKAS Accredited Logo

Certificate No. 9794

ISO 9001

ISO 14001