Drainage strategy (SuDS) in Northern Ireland
49 providers offering drainage strategy (suds) in or across Northern Ireland, including national firms. The rules in Northern Ireland differ from England’s, so see the notes below.
Councils in Northern Ireland may ask for drainage details with a planning application. New connections to the public sewer are applied for through NI Water, which decides within 21 days and needs an Article 161 agreement for sewers serving more than one property. Check your council’s requirements.
49 drainage engineers for Northern Ireland
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Showing all 49 providers
Based in or covering Northern Ireland (7)
Flood Risk Consulting Limited
Based in Lisburn, County Antrim · Covers Northern Ireland and Ireland Accreditation stated by provider: CEng MICE (principal)JKB Consulting Engineers Ltd
Based in Dundonald, County Down · Covers Northern Ireland and Ireland Accreditation stated by provider: Chartered Civil EngineerLucion Group
Based in Gateshead, Tyne and Wear · Covers Head office Team Valley, Gateshead; offices in Aberdeen, Preston Brook, Manchester, Hull, Leeds, South Yorkshire, Lincoln, Peterborough, Coventry, Surrey, Stroud, Bristol, London and Northern Ireland Accreditation stated by provider: UKAS-accredited inspection body No. 0263 (asbestos), CIEEM-accredited ecologistsMcCloy Consulting
Based in Newtownabbey, County Antrim · Covers Northern Ireland, Ireland, England, Scotland and Wales Accreditation not yet checkedMCL Consulting
Based in Belfast · Covers Northern Ireland Accreditation stated by provider: ISO 9001, ISO 14001Streamline Drainage Ltd
Based in Coleraine, County Londonderry · Covers Northern Ireland Accreditation not yet checkedNational providers (check they cover your area) (42)
AAH Consultants
Based in York · Covers Nationwide Accreditation stated by provider: Not statedAegaea
Based in London (Wimbledon office; also Edinburgh) · Covers UK-wide Accreditation stated by provider: MCIWEM, CEng, CWEMArbtech Consulting Ltd
Based in Chester · Covers UK-wide (England and Wales) Accreditation stated by provider: Not statedBetts Associates (Betts Hydro)
Based in Sealand, Flintshire, Wales · Covers UK-wide Accreditation stated by provider: Not confirmed on siteBrindle & Green
Based in Radbourne, Derby · Covers UK-wide; offices in Derby, Milton Keynes, Sheffield, Barnsley, Sevenoaks and London Accreditation not yet checkedBSP Consulting Ltd
Based in Sheffield · Covers Says it operates across the UK; offices in Sheffield, Leicester, Derby and Nottingham Accreditation stated by provider: Constructionline Gold, ISO 45001BWB Consulting
Based in Nottingham, Nottinghamshire (also Birmingham, Leeds, London, Manchester) · Covers UK-wide (national coverage from five English offices) Accreditation stated by provider: Not confirmed on siteCole Easdon
Based in Swindon, Wiltshire (also Bristol, London, Birmingham) · Covers UK-wide (nationwide consultancy from four offices) Accreditation stated by provider: Not confirmed on siteCreate Consulting Engineers
Based in Norwich, Norfolk (also London, Glasgow, Chelmsford, Milton Keynes) · Covers UK-wide (England and Scotland, from five offices) Accreditation verified 12 October 2026Crestwood Environmental Ltd
Based in Wolverhampton · Covers UK-wide from a Wolverhampton base Accreditation not yet checkedCurtins
Based in Offices across the UK and Ireland · Covers UK and Ireland; offices in Birmingham, Bristol, Cambridge, Cardiff, Edinburgh, Glasgow, Kendal, Leeds, Liverpool, London and Manchester (plus Douglas and Dublin) Accreditation not yet checkedDudleys Consulting Engineers
Based in Leeds, West Yorkshire · Covers Nationwide Accreditation stated by provider: Not statedEarth Environmental & Geotechnical
Based in Stockport, Greater Manchester · Covers UK-wide Accreditation stated by provider: Not statedEarth Science Partnership Ltd
Based in Taff's Well, Cardiff · Covers Wales, England, Scotland, Northern Ireland and Ireland Accreditation stated by provider: ISO 9001, ISO 14001EnviroCentre Limited
Based in Glasgow · Covers UK-wide from Glasgow head office and regional offices Accreditation stated by provider: ISO 9001, ISO 14001, ISO 45001Enviropass
Based in London · Covers Nationwide Accreditation stated by provider: Not statedFlood & Civil
Based in London · Covers Projects across the UK Accreditation not yet checkedFlume Consulting Engineers
Based in London · Covers England and Wales Accreditation stated by provider: Not statedFPS Environmental
Based in Not stated · Covers UK-wide Accreditation stated by provider: CIWEMGeoSmart Information
Based in Shrewsbury, Shropshire · Covers Not explicitly stated; serves planners, architects and developers nationally Accreditation stated by provider: Not confirmed on siteGRM Development Solutions
Based in Burton-on-Trent, Staffordshire · Covers Across the UK Accreditation not yet checkedGTA Civils & Transport
Based in Burgess Hill, West Sussex · Covers Sussex, Surrey and Kent, and UK-wide Accreditation stated by provider: ISO 9001, SMAS WorksafeJackson Purdue Lever
Based in Pride Park, Derby · Covers Nationwide from a Derby office Accreditation not yet checkedJMS Engineers
Based in Ipswich and Norwich · Covers East Anglia, Cambridge, Norfolk, Suffolk, Essex, Peterborough and London; UK-wide delivery Accreditation not yet checkedJomas Associates
Based in Uxbridge, London · Covers Nationwide; names London, Surrey, Kent and Wales Accreditation not yet checkedMayer Brown Ltd
Based in Woking, Surrey · Covers Says it works across the UK Accreditation stated by provider: ISO 9001, ISO 14001, Constructionline GoldMEC Consulting Group
Based in Hugglescote, Leicestershire · Covers Nationwide; offices in Leicester, Nottingham, Birmingham, London and Brighton Accreditation stated by provider: ISO (BSI logo)Meridian Civil Engineering Consultancy
Based in Brighton, East Sussex · Covers The UK (England, Wales, Scotland and Northern Ireland) Accreditation not yet checkedmode transport planning
Based in Birmingham, West Midlands · Covers Nationwide Accreditation stated by provider: Not statedRAB Consultants Ltd
Based in Lichfield, Staffordshire · Covers Describes itself as a national company Accreditation stated by provider: UKAS, ISO certification, IPFRARaincloud Consulting
Based in York · Covers UK-wide Accreditation stated by provider: CIWEMRIDA Reports
Based in Oxford · Covers UK-wide Accreditation stated by provider: Not statedRWA Consulting
Based in Wendover, Buckinghamshire · Covers Buckinghamshire and clients throughout the UK Accreditation not yet checkedSouthwest Environmental Limited
Based in Taunton, Somerset · Covers UK-wide, with offices in Taunton, Exeter, Plymouth, Bristol, London, Manchester and Edinburgh Accreditation not yet checkedSuDS Designs by JMS Engineers
Based in Brightwell, Suffolk · Covers Nationwide Accreditation stated by provider: Not statedSyntegra Consulting Ltd
Based in Reading, Berkshire · Covers UK-wide Accreditation not yet checkedUnda Consulting
Based in Crawley, West Sussex · Covers Nationwide Accreditation stated by provider: CIWEMUrban Water
Based in London · Covers Nationwide Accreditation stated by provider: ICE, CIWEMWard Cole
Based in Not stated · Covers Nationwide Accreditation stated by provider: Not statedWater Environment Limited
Based in Surbiton, Surrey · Covers Across the UK Accreditation not yet checkedWaterco (Waterco Datrys)
Based in Ruthin, Denbighshire, North Wales (also Caernarfon and Mold) · Covers North Wales and North West England, with UK-wide project delivery Accreditation stated by provider: ICE Approved, WIRS accredited, ISOQAR, UVDB (BS8555/CIWEM not confirmed on site)Woolgar Hunter Ltd
Based in Glasgow, Lanarkshire · Covers Across the UK (head office Glasgow) Accreditation not yet checkedLondon (22) South East (20) East of England (13) South West (11) West Midlands (13) East Midlands (11) Yorkshire and the Humber (13) North West (10) North East (9) Wales (15) Scotland (15)
Drainage strategy (SuDS) in Northern Ireland
This page lists drainage engineers covering the 11 council areas of Northern Ireland, with cities such as Belfast, Derry, Lisburn and Newry. Each of the 11 councils makes most planning decisions for its area, under Northern Ireland’s own planning system.
We list 7 firms for drainage strategy (SuDS) in Northern Ireland. Of these, 5 work only in this region and 2 also cover other regions. Another 42 firms say they cover the whole UK.
Firms that work only here are based in Belfast (1), Coleraine (1), Dundonald (1) and Lisburn (1).
Of the 7, 4 state an accreditation or membership. We have not verified any of them yet, so these are as each firm states. See how we check listings.
Nearby regions for drainage strategy (SuDS): Scotland. Other reports in Northern Ireland: flood risk assessment, topographical survey, structural engineer’s report, contaminated land report and bat survey.
Getting signed off in Northern Ireland
In Northern Ireland, your district council handles building control. New homes need a full plans application, and the council issues a completion certificate at the end. The technical rules are set out in Technical Booklets rather than Approved Documents.