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Sustainable Urban Drainage Systems (SUDS) projects we have worked on:


Ruislip High School 


Ruislip High School


Melliss were appointed in January 2005 by the London Borough of Hillingdon to undertake the RIBA Stages A-C design of a new secondary school, Phase I of which had to be ready for an intake of 150 year six pupils in September 2006.  We were novated after RIBA Stage C to the main contractor, Miller Construction, to complete the design.


Ruislip High School has been presented with National Green Plaque in recognition of their positive contribution to the built environment.


National Treasures buildings and structures have chosen the school as Green Apple Award winners for perserving our architectural heritage.

The Green Organisation is an independent environment group dedicated to promoting the positive side of environmental endeavour.

Ruislip High School


Both phases of the project are constructed mainly in reinforced concrete, although certain areas, such as the sports hall, are in structural steelwork.  Breeam, sustainability and environmental impact were of prime importance in the design of the school.


The building being located in close proximity of existing public playing fields and close to Yeading Brook, were within the 100 year Flood Plain and required close development with the Environment Agency with regard to sustainability and environmental impact.  Compensatory re-grading works were carried out due to flood plain encroachment, and sustainability measures used, which included permeable hard-standings, attenuated sub-bases and approximately 2,500m2 of green roof areas to filter and control the discharge of surface water ensuring a fully sustainable urban drainage system (SUDS) was employed. Drainage improvements necessary to the retained public playing field areas included extensive installation of field drains and associated use of existing site features discharging into a new balancing lake blended and contoured into surrounding landscape.


The final cost of the external works will be around £2 million, with the overall construction cost of the school being £16 million.


Ruislip High School 


Ruislip High School 



SUDS Wet Pond, Bracknell, Berkshire


The formation of a large wet pond which covers an area of 2.3 acres serving a catchment area of 90 hectares for a new business park.

SUDS wet pond Bracknell 


SUDS wet pond Colchester

TBS Distribution Centre, Frating Green, Colchester - SUDS Wet Pond


The 30 acre site was developed to provide  24,000 sq. m. (260,000 sq. ft.) of distribution warehouse and  4,000 sq. m. (43,000 sq. ft.) of offices.


Extensive infrastructure included a large wet pond with environmental enhancements.