Jenkins-Johnston was known for his "famous (open) letters" holding the government's feet to the fire and expressing the frustrations of many in Sierra Leone.

On public services In one such letter,[2] Jenkins-Johnston demanded answers from the President about unfulfilled election promises regarding the state of electricity supply in the country.

On Independence Day, April 27, 2012, Jenkins-Johnston was awarded Grand Commander of the Order of the Rokel (GCOR) by President Ernest Koroma, in recognition of 38 years of Distinguished Public Service as a General Legal Practitioner, Human Rights Lawyer and Social Commentator.

A founding Bencher and Tutor, Jenkins-Johnston taught Professional Practice and Ethics at Sierra Leone Law School from 1990 to 1992.

Jenkins-Johnston was appointed Chairman of the Commission of Inquiry to inquire into the disturbances at Koidu Holdings in Kono by President Koroma in January 2008 and produced a report in just 3 months in March 2008.