| ITRS Group Limited | ITRS Group Ltd, 15 Bonhill Street, London EC2A 4DN |
| ITRS America Inc | ITRS America Inc, 711 Third Avenue, Suite 1802, New York, NY 10017 USA |
| ITRS (Phils) Inc | ITRS (PHILS) Inc, 18th Floor, Tower 6789, 6789 Ayala Avenue, Makati City 1206, Philippines |
| ITRS Asia Limited | ITRS Asia Ltd, Unit 3310, 33F, The Center 99 Queen's Road Central, Hong Kong |
| ITRS Asia Limited (Singapore Branch) | ITRS Singapore, 16 Collyer Quay, Level 21, Room 15, Singapore 049318 |
| ITRS Canada Limited | 1500 Royal Centre, 1055 West Georgia Street, P.O. BOX 11117, Vancouver BC V6E 4N7, Canada |
| ITRS (Spain) S.L. | ITRS Spain, Plaza de la Solidaridad 12, 1st floor, 29002, Málaga, Spain |