| AirGi Concept | Egide Van Ophemstraat,114 | Ukkel | 0768454982 |
| ANEMOS CONSULTING | Ruststraat,61 | Ukkel | 0777820234 |
| ATROIS BELGIUM | Kersbeeklaan,308 | Ukkel | 0787535179 |
| ATROIS BELGIUM | Kersbeeklaan,308 | Ukkel | 0787535179 |
| AUYAN TEAM | Alsembergsesteenweg,1031 B | Ukkel | 0678582306 |
| Azero | Stanleystraat,58A | Ukkel | 0805693777 |
| b architects | Drie Koningenstraat,163 | Ukkel | 0448460494 |
| BATIMO | Vanderaeylaan,50 | Ukkel | 0445597016 |
| Break The Grip Consultancy | Zijlaan,41A | Ukkel | 0667731865 |
| BUREAU D'INGENIEURS - CONSEILS M. DROYERS et ASSOCIES | Alphonse Renardstraat,82 | Ukkel | 0452290511 |
| BUREAU DE CONSTRUCTION DE DESSIN ET D'EXPERTISE | Rittwegerstraat,50 | Ukkel | 0419996637 |
| Compass Engineering | Egide Van Ophemstraat,2 | Ukkel | 0767724712 |
| DAMIEN RENCHON | Winston Churchilllaan,118 | Ukkel | 0870517788 |
| DC CONSULT | Prins van Oranjelaan,154 | Ukkel | 0477537334 |
| DE WEVER AND PARTNERS | Sumatralaan,28 | Ukkel | 0421077097 |
| DO ELECTRONICS | Lindenlaan,31 | Ukkel | 0791447348 |
| DOTEL CONSULT | Lindenlaan,31 | Ukkel | 0779967102 |
| ECO PACK | Jean en Pierre Carsoellaan,83c | Ukkel | 0845775167 |
| EDGE PharmaTech | Vanderkinderestraat,238 | Ukkel | 0753817088 |
| Epsilon Impact | Horzelstraat,155 | Ukkel | 0723768072 |
| Falcon et Co | Dieweg,28N | Ukkel | 0454596933 |
| FLOW TRANSFER INTERNATIONAL | Hamstraat,137 | Ukkel | 0427904018 |
| FLOW TRANSFER INTERNATIONAL | Hamstraat,137 | Ukkel | 0427904018 |
| Futurewave | Winston Churchilllaan,167 | Ukkel | 0746784291 |
| Futurewave | Winston Churchilllaan,167 | Ukkel | 0746784291 |
| GOMBERT H.R. | Montjoielaan,169 | Ukkel | 0442316832 |
| HELLEA | Kersbeeklaan,308 | Ukkel | 0466810223 |
| HEXIPROM | Drie Bomenstraat,62 | Ukkel | 0763707427 |
| IN-FACT | Mariannestraat,61 | Ukkel | 0650984519 |
| INGEROP BELGIUM | Waterloosesteenweg,1151 | Ukkel | 0733604961 |
| Institut Royal Météorologique de Belgique | Ringlaan,3 | Ukkel | 0349294822 |
| ISALYS CONSULTING | Winston Churchilllaan,141 | Ukkel | 0652882551 |
| ISALYS CONSULTING | Winston Churchilllaan,141 | Ukkel | 0652882551 |
| JLR CONSULTING | Drogenbossesteenweg,179 | Ukkel | 0776690381 |
| KANNAL | Stanleystraat,58 | Ukkel | 0765839447 |
| Koninklijk Meteorologisch Instituut van Belgie | Ringlaan,3 | Ukkel | 0349294822 |
| Königliches Meteorologisches Institut von Belgien | Ringlaan,3 | Ukkel | 0349294822 |
| LibrExplore | Edith Cavellstraat,18 | Ukkel | 0785542424 |
| LOONIT | René Lyrlaan,14 | Ukkel | 0744520728 |
| METIL | René Gobertlaan,87 | Ukkel | 0420374937 |
| Michel HERCH | Kersbeeklaan,306 | Ukkel | 0415726360 |
| MP SOLVING | Copernicusstraat,48 | Ukkel | 0810566642 |
| MXpert | Groeselenbergstraat,57 | Ukkel | 0653787126 |
| NCouncil | Winston Churchilllaan,11 | Ukkel | 0792455356 |
| Novera Solutions | Georges Lecointelaan,50 | Ukkel | 0684865728 |
| OVIZIO IMAGING SYSTEMS | Kersbeeklaan,306 | Ukkel | 0821638597 |
| OVIZIO IMAGING SYSTEMS | Kersbeeklaan,306 | Ukkel | 0821638597 |
| PFC ENGINEERING | Alsembergsesteenweg,1114 | Ukkel | 0864139841 |
| PFC ENGINEERING | Alsembergsesteenweg,1114 | Ukkel | 0864139841 |
| PIERRE BASTIEN | Vanderkinderestraat,310 | Ukkel | 0719322702 |
| Playground Engineering | Kersbeeklaan,308 | Ukkel | 0792995784 |
| POWER DEVELOPMENT ENGINEERING | Sint-Jobsesteenweg,366 | Ukkel | 0475426692 |
| PROTOSSYS | Alsembergsesteenweg,471 | Ukkel | 0810497653 |
| Revolta | Edmond Picardstraat,62 | Ukkel | 0690834493 |
| R?Saunante | Drie Bomenstraat,54 | Ukkel | 0774579642 |
| SCS Engineering | Kasteel de Walzinlaan,10a | Ukkel | 0716621548 |
| SEE BUILDING | Vossendreef,40 | Ukkel | 0800573860 |
| Sinep | Jean en Pierre Carsoellaan,50 | Ukkel | 0400055813 |
| SYNGRAFA | ten Horenlaan,8 | Ukkel | 0644671601 |
| TELCOM | Merlostraat,6A | Ukkel | 0450612807 |
| TELCOM | Merlostraat,6A | Ukkel | 0450612807 |
| TELEMA MANAGEMENT & CONSULTING | Drogenbossesteenweg,187 | Ukkel | 0794418716 |
| Terideal ID Verde Arrosage Tram Liège | Terhulpensesteenweg,1 | Ukkel | 0792469313 |
| The AST Company | René Gobertlaan,12 | Ukkel | 0474630601 |
| TTAKY | Berg van Sint-Job,9 | Ukkel | 0770580668 |
| TTR ENERGY | Alsembergsesteenweg,993 | Ukkel | 0898237222 |
| URBAN AGE | Lincolnstraat,91 | Ukkel | 0479764176 |
| V B L ASSOCIATION | Alphonse Renardstraat,82 | Ukkel | 0557872833 |
| VANDENDIJK EN CO | Edith Cavellstraat,66 | Ukkel | 0428175420 |
| ViMa CONSULTING | Boetendaelstraat,39 | Ukkel | 0675752280 |
| VRO-ENGINEERING | Rietstraat,25 | Ukkel | 0778532193 |
| Willisawat | Ruststraat,139 | Ukkel | 1002658316 |
| WINGCAT | Denneboslaan,17 | Ukkel | 0758728951 |
| XA12 | Papenkasteelstraat,166 | Ukkel | 1002711269 |
| Xavier Defays | Forelweg,41 | Ukkel | 0526846392 |
| Xbio-consult | Gendarmendreef,159 | Ukkel | 0800732327 |