Jomo Kenyatta had eczema across his body. Kenyatta's imprisonment transformed him into a political martyr for many Kenyans, further enhancing his status. A Luo anti-colonial activist, Jaramogi Oginga Odinga, was the first to publicly call for Kenyatta's release, an issue that gained growing support among Kenya's anti-colonialists. In 1955, the British writer Montagu Slater—a socialist sympathetic to Kenyatta's plight—released "The Trial of Jomo Kenyatta", a book which raised the profile of the case. In 1958, Rawson Macharia, the key witness in the state's prosecution of Kenyatta, signed an affidavit swearing that his evidence against Kenyatta had been false; this was widely publicised.
Jomo Kenyatta London took to wearing a fez and cloak and carrying a silver-topped black cane. He adopted his surname, "Kenyatta", after the name of a beaded belt he often wore in early life. As President he collected a variety of expensive cars. Murray-Brown noted that Kenyatta had the ability to "appear all things to all men", also displaying a "consummate ability to keep his true purposes and abilities to himself", for instance concealing his connections with communists and the Soviet Union from both members of the British Labour Party and Kikuyu figures at home. This deviousness was sometimes interpreted as dishonesty