| Investigator | Institution | Country |
| Dr. Tim Bean | Centre for Environment, Fisheries & Aquaculture Science (CEFAS) | UK |
| Mr Rhys Goodhead | University of Exeter | UK |
| Prof. Tom Hutchinson | Centre for Environment, Fisheries & Aquaculture Science (CEFAS) | UK |
| Prof. Taisen Iguchi | National Institute for Basic Biology (NIBB) | Japan |
| Dr. Andrew Johnson | Centre for Ecology and Hydrology (CEH) | UK |
| Dr. Ioanna Katsiadaki | Centre for Environment, Fisheries & Aquaculture Science (CEFAS) | UK |
| Dr. Yoshinao Katsu | Hokkaido University | Japan |
| Prof. Tohru Kobayashi | University of Shizuoka | Japan |
| Dr. Anke Lange | University of Exeter | UK |
| Dr. Mizuhiko Minamiyama | Public Works Research Institute (PWRI) | Japan |
| Dr. Shin-ichi Miyagawa | Okazaki National Research Institutes | Japan |
| Dr. Masaki Nagae | Nagasaki University | Japan |
| Dr. Tomohiro Oka | IDEA Consultants, Inc. | Japan |
| Dr. Yasuhiko Ohta | Tottori University | Japan |
| Dr. Daniel Pickford | Brunel University | UK |
| Prof. Alexander P. Scott | Centre for Environment, Fisheries & Aquaculture Science (CEFAS) | UK |
| Dr. Minoru Takase | Hiroshima University | Japan |
| Prof. Hiroaki Tanaka | Kyoto University | Japan |
| Dr. Norihisa Tatarazako | National Institute for Environmental Studies | Japan |
| Prof. Charles Tyler | University of Exeter | UK |
Participating Laboratories
Scientists that participate in the UK-J partnership are affiliated to academic and (non-) governmental institutions. The table below lists some of the key scientists involved in the UK-J initiative, as well as the observers/reviewers of the Partnership.
| Observers/Reviewers | Institution | Country |
| Prof. Alan Pickering | Independent Consultant | UK |
| Dr. Christina Lye | Independent Consultant | UK |
| Prof. Lou Guillette | University of Florida | USA |