Richard Allitt Associates is a leading specialist provider of hydraulic modelling, flood risk management and surface water management.    Highly regarded in the industry for using state of the art hydraulic modelling techniques, the company has grown into a successful SME operating nationally with two offices and over 20 employees.  We have a long track record in the provision of flood risk consultancy services including hydraulic modelling, catchment planning, hydrology, engineering, surface water and drainage assessments in a range of sectors including private, local authority and the legal profession.

23

Years in business

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204

Clients across multiple sectors

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210

Expert Witness Cases

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Some of our clients

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Latest News

RAA to lead update of the CIWEM Urban Drainage Group Integrated Urban Drainage Modelling Guide in partnership with AECOM and others

  The Chartered Institution of Water and Environmental Management (CIWEM) and the Environment Agency have contracted Richard Allitt Associates Ltd and AECOM to update the industry standard guidance on Integrated Urban Drainage. Hydraulic modelling and urban drainage specialist Richard Allitt Associates Ltd will be supported by AECOM, industry leaders in[…..]

RAA achieve ISO 45001:2018 accreditation

Richard Allitt Associates Ltd are delighted to announce that we have successfully achieved certification to the new ISO 45001:2018 Health and Safety standard.  ISO 45001 replaces OHSAS 18001 as the International standard for occupational health and safety best practice. Leadership and worker participation were key to achieving the standard, and[…..]

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