Here are some options for funding. When considering these, make sure the remit
is right for your project and background, and that the career stage is also
right.
Research Councils
MRC Clinical research training fellowships
https://www.ukri.org/what-we-do/developing-people-and-skills/mrc/fellowships/fellowship-opportunities-and-expectations/clinical-research-training-fellowships/#contents-list
(for clinicians; either for a PhD or to return to research after 5 years away)
BBSRC Fellowships
https://www.ukri.org/what-we-do/developing-people-and-skills/bbsrc/fellowships/
more senior:
MRC Clinician Scientist fellowship
https://www.ukri.org/what-we-do/developing-people-and-skills/mrc/fellowships/fellowship-opportunities-and-expectations/clinician-scientist-fellowship/#contents-list
MRC Career Development Award
https://www.ukri.org/what-we-do/developing-people-and-skills/mrc/fellowships/fellowship-opportunities-and-expectations/career-development-award/#contents-list
ERC / Marie Curie
https://marie-sklodowska-curie-actions.ec.europa.eu/calls/msca-postdoctoral-fellowships-2025
Charities
Wellcome Early Career Awards
https://wellcome.org/research-funding/schemes/wellcome-early-career-awards
Wellcome Career Development Awards
https://wellcome.org/research-funding/schemes/wellcome-career-development-awards
Daphne Jackson
Fellowship https://daphnejackson.org/fellowship/regular-research-fellowships/
Leverhulme Early Career Fellowship (ECF)
https://www.leverhulme.ac.uk/early-career-fellowships
Branco-Weiss Fellowship
https://brancoweissfellowship.org/
Jacobs Foundation Fellowship [children / development only]
https://jacobsfoundation.org/en/activity/jacobs-foundation-research-fellowship-program/
ARUK research fellowships [Dementia only]
https://www.alzheimersresearchuk.org/grants/research-fellowship/
https://www.alzheimersresearchuk.org/research/for-researchers/grant-schemes/
Human Frontiers Fellowship
https://www.hfsp.org/funding/hfsp-funding/postdoctoral-fellowships
Brain and Behavior Research Foundation BBRF Young Investigator Grants
https://bbrfoundation.org/grants-prizes/bbrf-young-investigator-grants
Societies & Academies
British Academy Postdoc fellowship
https://www.thebritishacademy.ac.uk/british-academy-postdoctoral-fellowships
Royal Society Dorothy Hodgkin Fellowship
https://royalsociety.org/grants-schemes-awards/grants/dorothy-hodgkin-fellowship/
(if require flexible working)
Newton International Fellowships
https://royalsociety.org/grants-schemes-awards/grants/newton-international/
(for non-UK scientists coming to the UK)
Royal Commission for the Exhibition of 1851 Research Fellowships in Science or Engineering
https://www.royalcommission1851.org/awards/?award=research
variety of fellowships
Brain postdoc award
https://guarantorsofbrain.org/grants/post-doc-brain-entry-fellowships/
(not usually for mental health research)
Other
AXA Research Fellowship
https://axa-research.org/fund-your-research/post-doctoral-fellowships
Swiss National Science Foundation
https://www.snf.ch/en/XIZpfY3iVS5KRRoD/funding/careers/postdoc-mobility
(with connection to Switzerland)