Uyanwah's sense of duty took her back to Nigeria and Biafra where she served as the Chief Medical Officer.

[4] She became a fellow of the Royal College of Obstetricians and Gynaecologists and an adviser to the World Health Organization on cervical cancer.

[4] She also worked around this time at the King Faisal Military Hospital in Saudi Arabia, in Qatar, and finally in Muscat in Oman.

[1] Uyanwah died at her home in Baker Street in London following a stroke over 23 years before at Sultan Qaboos Hospital Salalah in Oman.

She was doing her ward rounds when it took place and she was sent back to the UK where she spent nine months in convalescence at the Royal Devonshire Hospital.