Welcome to Richard Allitt Associates...

"Our aim is to resolve flooding problems in the urban environment using the latest analytical techniques"

sussex flooding

Richard Allitt Associates is a leading specialist provider of hydraulic modelling, surface water management and flood risk consultancy for the urban drainage industry.

We pride ourselves on the high level of detail we can provide and the quality of our work using state of the art hydraulic modelling techniques.

Our program of choice is InfoWorks ICM which offers exceptional results through its general versatility and functionality. It provides us with the ability to test future developments through the use of 'what if flooding scenarios’.

As hydraulic modelling specialists we are experienced in a range of sectors including water companies, the property sectorlocal authorities and the legal profession.

We have offices in the Midlands and Sussex and operate nationally. However, as a small consultancy we like to think we can be highly responsive and cost effective while at the same time offering a high quality specialised service.

With 20 years experience we are sought after for our Expert Witness services and offer consultancy on a wide range of complex flood modelling, drainage and wastewater issues. 

Please call us on 01444 401840 to see how we can help

susdrain logo richard allitt associates

We are an advocate of and expert in sustainable drainage schemes (SuDS) and have partnered with Susdrain to support their implementation. 

Have you signed up yet to SUSDRAIN's FREE EVENT: The water industry's journey towards sustainable drainage?

Our services include researchtechnical development, flooding investigations, flood risk assessmentdesign and feasibilityconsultancy and project management. We carry out specialist flood risk assessments, urban flood forecasting and provide innovative drainage area plans, sewerage management and surface water plans.

You will find many of our case studies showcasing our work throughout this site; our latest examples can be found here:

Filey Flood Alleviation Scheme

South Tyneside SWMP

Latest News!

Our thoughts on the CIWEM Urban Drainage Conference

Lead Local Flood Authority keen to hear latest from RAA on Flood Forecasting 

Richard Allitt Associates celebrates 20th Anniversary

richard allitt associates ltd logo

Richard Allitt Associates a Finalist in Gatwick Diamond Business Awards

Partnership Working delivers results for Severn Trent

Real Time Urban Flood Forecasting Now a Reality

Two of Richard Allitt Associates' hydraulic modellers chosen as Finalists for Adam Dean Award

Richard Allitt Associates continues to grow

Richard Allitt Associates wins place on £49 mn Severn Trent Water AMP6 Sewerage Management team

A Flood of Claims - how hydraulic modelling is helping the legal profession deal with the rising cost of flooding

Richard Allitt Associates develops technical tool to assist WaSCs with new strategies for Fats, Oils & Greases

See what's stopping SuDS progress?

Remote Aerial Surveys 

We now also offer UAV ('drone')aerial surveys for a range of uses including environmental monitoring and industrial inspections. Take a look at our work on You Tube or visit us at www.remoteaerialsurveys.co.uk for more information.


UKAS Accredited Logo

Certificate No. 9794

ISO 9001

ISO 14001