| Member | Type |
| Abley | Australasia |
| Acstro | UK & Ireland |
| Active Travel England | UK & Ireland |
| ADC Infrastructure | UK & Ireland |
| ADL Traffic & Highways Engineering | UK & Ireland |
| Advance Consulting Engineers | UK & Ireland |
| AECOM | UK & Ireland |
| Alan Baxter | UK & Ireland |
| Align Property Services | UK & Ireland |
| Amey | UK & Ireland |
| Andrew Moseley Associates | UK & Ireland |
| Apex Transport Planning | UK & Ireland |
| apT. Group | UK & Ireland |
| Arcadis | UK & Ireland |
| Ardent Consulting Engineers | UK & Ireland |
| ARRB | UK & Ireland/Australasia |
| Arrive | Australasia |
| Arup | UK & Ireland |
| Asbri Transport | UK & Ireland |
| Ashley Helme Associates | UK & Ireland |
| Atkins | UK & Ireland |
| Atkins Ireland | UK & Ireland |
| ATU Sligo | UK & Ireland |
| Aurecon | Australasia |
| Aval Consulting Group | UK & Ireland |
| Awcock Ward Partnership | UK & Ireland |
| AXIS PED | UK & Ireland |
| Bancroft Consulting | UK & Ireland |
| Banners Gate | UK & Ireland |
| BCP Council | UK & Ireland |
| Beacon Transport Planning | UK & Ireland |
| Beca | UK & Ireland/Australasia |
| Bedford Borough Council | UK & Ireland |
| Bellamy Roberts | UK & Ireland |
| Birmingham City Council | UK & Ireland |
| Bloxam Burnett & Olliver | Australasia |
| Boston Transport Planning | UK & Ireland |
| Bracknell Forest Council | UK & Ireland |
| Bradford Council | UK & Ireland |
| Brent Council | UK & Ireland |
| Bridgend County Borough Council | UK & Ireland |
| Bright Plan | UK & Ireland |
| Brighton & Hove City Council | UK & Ireland |
| Bristol City Council | UK & Ireland |
| Brookbanks Consulting | UK & Ireland |
| Bryan G Hall | UK & Ireland |
| BSP Consulting | UK & Ireland |
| Buckinghamshire County Council | UK & Ireland |
| BuroHappold Engineering | UK & Ireland |
| BWB Consulting | UK & Ireland |
| Calibre Group | Australasia |
| Calibro Consultants | UK & Ireland |
| Callidus | UK & Ireland |
| Cambridgeshire County Council | UK & Ireland |
| Camden Council | UK & Ireland |
| Cameron Rose Associates | UK & Ireland |
| Cameron+Ross | UK & Ireland |
| CampbellReith | UK & Ireland |
| Caneparo Associates | UK & Ireland |
| Canham Consulting | UK & Ireland |
| Cannon Consulting Engineers | UK & Ireland |
| Capital Transport Planning | UK & Ireland |
| Cardiff Council | UK & Ireland |
| Carriageway Consulting | Australasia |
| CBO Transport | UK & Ireland |
| Central Bedfordshire Council | UK & Ireland |
| Charles & Associates | UK & Ireland |
| Cheshire East Council | UK & Ireland |
| Christchurch City Council | UK & Ireland/Australasia |
| City of London Corporation | UK & Ireland |
| City of Stoke-on-Trent | UK & Ireland |
| City of Wolverhampton Council | UK & Ireland |
| City Science | UK & Ireland |
| Civic Engineers | UK & Ireland |
| Clancy Consulting | UK & Ireland |
| Clarkebond | UK & Ireland |
| Clifton Scannell Emerson Associates | UK & Ireland |
| Cole Easdon Consultants | UK & Ireland |
| Condon Drew Associates | UK & Ireland |
| Connect Consultants | UK & Ireland |
| Considine | UK & Ireland |
| Cora iHt | UK & Ireland |
| CORMAC | UK & Ireland |
| Corun Associates | UK & Ireland |
| Cottee Transport Planning | UK & Ireland |
| Coventry City Council | UK & Ireland |
| Create Consulting Engineers | UK & Ireland |
| Croft Transport Planning and Design | UK & Ireland |
| Crosby Transport Planning | UK & Ireland |
| CS Consulting | UK & Ireland |
| CST Group | UK & Ireland |
| cTc | UK & Ireland |
| Cundall | UK & Ireland |
| Curtins | UK & Ireland |
| David Tucker Associates | UK & Ireland |
| DBFL Consulting Engineers | UK & Ireland |
| Derby City Council | UK & Ireland |
| Derbyshire County Council | UK & Ireland |
| Development Planning | UK & Ireland |
| Devon County Council | UK & Ireland |
| DfI | UK & Ireland |
| DHA | UK & Ireland |
| DLP Planning | UK & Ireland |
| DMMason Engineering Consultants | UK & Ireland |
| Doncaster Council | UK & Ireland |
| Doran Consulting | UK & Ireland |
| Dorset Council | UK & Ireland |
| Dougall Baillie Associates | UK & Ireland |
| Dudley Council | UK & Ireland |
| Dundee City Council | UK & Ireland |
| Dunedin City Council | Australasia |
| Dynamic Transport Planning | UK & Ireland |
| EAS | UK & Ireland |
| East Riding of Yorkshire Council | UK & Ireland |
| East Sussex County Council | UK & Ireland |
| ECS Transport Planning | UK & Ireland |
| Edwards & Edwards Consultancy | UK & Ireland |
| ElliottWood | UK & Ireland |
| Enfield Council | UK & Ireland |
| Entran | UK & Ireland |
| Enzygo | UK & Ireland |
| ERM UK | UK & Ireland |
| Essex County Council | UK & Ireland |
| Evoke Transport | UK & Ireland |
| Exigo Project Solutions | UK & Ireland |
| Fairhurst | UK & Ireland |
| Falkirk Council | UK & Ireland |
| Farrow Walsh Consulting | UK & Ireland |
| Fastnet | UK & Ireland |
| Flinders Chase | UK & Ireland |
| Flow | UK & Ireland/Australasia |
| Flow Consult | UK & Ireland |
| Focus Transport Planning | UK & Ireland |
| Fore Consulting | UK & Ireland |
| Galway County Council | UK & Ireland |
| Gateshead Council | UK & Ireland |
| GCM Consultancy Services | UK & Ireland |
| GHD | UK & Ireland |
| Glanville Consultants | UK & Ireland |
| Glasgow City Council | UK & Ireland |
| Gloucestershire County Council | UK & Ireland |
| Goodson Associates | UK & Ireland |
| Grange Transport Consulting | UK & Ireland |
| Gray Matter | Australasia |
| GTA Civils & Transport | UK & Ireland |
| Hampshire County Council | UK & Ireland |
| Harriet Fraser | Australasia |
| Harrison Transportation | Australasia |
| Hawthorn Geddes | Australasia |
| HDR | UK & Ireland |
| Hertfordshire County Council | UK & Ireland |
| Hexa Consulting | UK & Ireland |
| Heyne Tillett Steel | UK & Ireland |
| Highgate Transportation | UK & Ireland |
| Hilson Moran | UK & Ireland |
| HoyDorman | UK & Ireland |
| HSP Consulting | UK & Ireland |
| Hub Transport Planning | UK & Ireland |
| Hull City Council | UK & Ireland |
| Hydrock | UK & Ireland |
| Iceni Projects | UK & Ireland |
| ILTP Consulting | UK & Ireland |
| IMA Transport Planning | UK & Ireland |
| Infrastructure Planning & Design | UK & Ireland |
| Ingleton Wood | UK & Ireland |
| Intermodal Transportation | UK & Ireland |
| iPRT | UK & Ireland |
| i-Transport | UK & Ireland |
| J.B. Barry & Partners | UK & Ireland |
| Jacobs New Zealand | Australasia |
| Jacobs UK | UK & Ireland |
| JMS Engineers | UK & Ireland |
| JNP Group Consulting Engineers | UK & Ireland |
| Journey Transport Planning | UK & Ireland |
| JPC Consulting | UK & Ireland |
| JPP Consulting | UK & Ireland |
| Jubb | UK & Ireland |
| Kent County Council | UK & Ireland |
| Kevin McShane | UK & Ireland |
| Key Transport Consultants | UK & Ireland |
| Kingston Council | UK & Ireland |
| Kirklees Council | UK & Ireland |
| Knights | UK & Ireland |
| Knowsley Council | UK & Ireland |
| Lancashire County Council | UK & Ireland |
| Lanmor Consulting | UK & Ireland |
| Leeds Beckett University | UK & Ireland |
| Leeds City Council | UK & Ireland |
| Leicester City Council | UK & Ireland |
| Leicestershire County Council | UK & Ireland |
| Lime Transport | UK & Ireland |
| Lincolnshire County Council | UK & Ireland |
| Link Transport Planning | UK & Ireland |
| Lisbane Consultants | UK & Ireland |
| Liverpool City Council | UK & Ireland |
| Local Transport Projects | UK & Ireland |
| London Borough of Bexley | UK & Ireland |
| London Borough of Richmond upon Thames | UK & Ireland |
| LUC | UK & Ireland |
| Luke Benner Consulting | Australasia |
| Luton Borough Council | UK & Ireland |
| MAC | UK & Ireland |
| Magna Transport Planning | UK & Ireland |
| Mark Baker Consulting | UK & Ireland |
| Markides Associates | UK & Ireland |
| Martin Rogers Consulting | UK & Ireland |
| Mayer Brown | UK & Ireland |
| M-EC Consulting Development Engineers | UK & Ireland |
| Meinhardt UK | UK & Ireland |
| Merton Council | UK & Ireland |
| Met Consultancy Group | UK & Ireland |
| MHL | UK & Ireland |
| Miles White Transport | UK & Ireland |
| Milestone Infrastructure | UK & Ireland |
| Milestone Transport Planning | UK & Ireland |
| MJM Consulting Engineers | UK & Ireland |
| Mode Transport Planning | UK & Ireland |
| Modus Transport Solutions | UK & Ireland |
| Momentum Transport Consultancy | UK & Ireland |
| Monson | UK & Ireland |
| Moray Council | UK & Ireland |
| Mosodi | UK & Ireland |
| Motion | UK & Ireland |
| Mott MacDonald | UK & Ireland |
| MRA Partnership | UK & Ireland |
| MTC Engineering | UK & Ireland |
| Neath Port Talbot Council | UK & Ireland |
| Neil Brant Consulting | UK & Ireland |
| New Plymouth District Council | Australasia |
| Nick Culhane Highway Consultant | UK & Ireland |
| North Lincolnshire Council | UK & Ireland |
| North Northamptonshire Council | UK & Ireland |
| North Somerset Council | UK & Ireland |
| North Yorkshire County Council | UK & Ireland |
| Northern Transport Planning | UK & Ireland |
| Nottinghamshire County Council | UK & Ireland |
| Novo Group | UK & Ireland/Australasia |
| NRB Consulting Engineers | UK & Ireland |
| NRG Consulting | UK & Ireland |
| NRP | UK & Ireland |
| OCSC | UK & Ireland |
| Odyssey | UK & Ireland |
| Optima Highways | UK & Ireland |
| Orari | UK & Ireland |
| Origin Transport Consultants | UK & Ireland |
| ORS | UK & Ireland |
| Oxfordshire County Council | UK & Ireland |
| Paragon Highways | UK & Ireland |
| Patrick Parsons | UK & Ireland |
| Paul Basham Associates | UK & Ireland |
| Paul Mew Associates | UK & Ireland |
| Pegasus Group | UK & Ireland |
| Pell Frischmann | UK & Ireland |
| Pembrokeshire County Council | UK & Ireland |
| Perth & Kinross Council | UK & Ireland |
| Peter Evans Partnership | UK & Ireland |
| PFA Consulting | UK & Ireland |
| Pinnacle Consulting Engineers | UK & Ireland |
| PJA | UK & Ireland |
| Plymouth City Council | UK & Ireland |
| PMCE Consultants | UK & Ireland |
| Portsmouth City Council | UK & Ireland |
| Price & Myers | UK & Ireland |
| Prime Transport Planning | UK & Ireland |
| Project Centre | UK & Ireland |
| PT PIanners | UK & Ireland |
| Pulsar Transport Planning | UK & Ireland |
| PUNCH Consulting Engineers | UK & Ireland |
| QTP | Australasia |
| Ramboll UK | UK & Ireland |
| Rappor Consultants | UK & Ireland |
| Reading Borough Council | UK & Ireland |
| Redwood Partnership | UK & Ireland |
| Reeves Transport Planning | UK & Ireland |
| RGP | UK & Ireland |
| Rhondda Cynon Taf County Borough Council | UK & Ireland |
| Richard Jackson | UK & Ireland |
| Ridge | UK & Ireland |
| RMB Consultants | UK & Ireland |
| RMIT University | UK & Ireland/Australasia |
| Roads & Sewers for Planning & Design | UK & Ireland |
| Robert West | UK & Ireland |
| Roberts Highway Consultants | UK & Ireland |
| Rodgers Leask | UK & Ireland |
| Rossi Long | UK & Ireland |
| Rotherham Metropolitan Borough Council | UK & Ireland |
| Roughan & O'Donovan | UK & Ireland |
| Royal HaskoningDHV | UK & Ireland |
| RPS Group | UK & Ireland |
| S·A·J Transport Consultants | UK & Ireland |
| Sanderson Associates | UK & Ireland |
| Sands Consultants | UK & Ireland |
| Sandwell Council | UK & Ireland |
| Scott White and Hookins | UK & Ireland |
| SCP Transport | UK & Ireland |
| SDP | UK & Ireland |
| Sefton Council | UK & Ireland |
| SK Transport Planning | UK & Ireland |
| Slough Borough Council | UK & Ireland |
| SLR Consulting | UK & Ireland |
| Solihull Council | UK & Ireland |
| Somerset County Council | UK & Ireland |
| South Gloucestershire Council | UK & Ireland |
| South Lanarkshire Council | UK & Ireland |
| Southampton City Council | UK & Ireland |
| Southwark Council | UK & Ireland |
| Staffordshire County Council | UK & Ireland |
| Stantec New Zealand | UK & Ireland/Australasia |
| Stantec UK | UK & Ireland |
| Steer | UK & Ireland |
| Stephen Reid Consulting | UK & Ireland |
| Stirling Maynard | UK & Ireland |
| Stockport Council | UK & Ireland |
| Stomor | UK & Ireland |
| Stuart Michael Associates | UK & Ireland |
| Suffolk County Council | UK & Ireland |
| Surrey County Council | UK & Ireland |
| Sutton Council | UK & Ireland |
| SW Consultancy | UK & Ireland |
| Sweco | UK & Ireland |
| Swindon Borough Council | UK & Ireland |
| SYSTRA | UK & Ireland |
| TEAM Traffic | UK & Ireland/Australasia |
| Tees Valley Combined Authority | UK & Ireland |
| Tetra Tech | UK & Ireland |
| The Highland Council | UK & Ireland |
| Torbay Council | UK & Ireland |
| TPC | Australasia |
| TPHS | UK & Ireland |
| TPS M Moran & Associates | UK & Ireland |
| Trace Design | UK & Ireland |
| Transoft Solutions | Australasia |
| Transport for Greater Manchester | UK & Ireland |
| Transport for NSW | Australasia |
| Transport for West Midlands | UK & Ireland |
| Transport Insights | UK & Ireland |
| Transport Planning | UK & Ireland |
| Transport Planning & Highways | UK & Ireland |
| Transport Planning Associates | UK & Ireland |
| Transport Planning Practice | UK & Ireland |
| Trasky | UK & Ireland |
| Trips Database Bureau | UK & Ireland/Australasia |
| TTC | UK & Ireland |
| TTHC | UK & Ireland |
| TTP Consulting | UK & Ireland |
| TU Dublin | UK & Ireland |
| Turner Lowe Associates | UK & Ireland |
| Turvey Consultancy | UK & Ireland |
| University of Birmingham | UK & Ireland |
| University of Salford | UK & Ireland |
| University of Westminster | UK & Ireland |
| Urban Flow | UK & Ireland |
| UWE Bristol | UK & Ireland |
| Vectio | UK & Ireland |
| Velocity Transport Planning | UK & Ireland |
| Via Solutions | UK & Ireland |
| Vision Transport Planning | UK & Ireland |
| Wakefield Council | UK & Ireland |
| Walsall Council | UK & Ireland |
| Wandsworth Council | UK & Ireland |
| Wardell Armstrong | UK & Ireland |
| Warrington Borough Council | UK & Ireland |
| Warwickshire County Council | UK & Ireland |
| Waterman Group | UK & Ireland |
| Waterman Moylan | UK & Ireland |
| West Berkshire Council | UK & Ireland |
| West Northamptonshire Council | UK & Ireland |
| West Sussex County Council | UK & Ireland |
| Westmorland & Furness Council | UK & Ireland |
| Wiltshire Council | UK & Ireland |
| Wokingham Borough Council | UK & Ireland |
| Woods Hardwick | UK & Ireland |
| Worcestershire County Council | UK & Ireland |
| Wormald Burrows Partnership | UK & Ireland |
| WSP | UK & Ireland |
| WSP New Zealand | Australasia |
| YES Transport | UK & Ireland |