 Nyorera kupfuurira kweiyi ndima - Blackman aive muBritish Republican, nhengo yeLiberal Democrats uye akambove nhengo yeLiberal Party, achirwira bato iri musarudzo huru ya1964. Akaramba CBE muna 2002, sezvo ainzwa kuti sezvo republican zvaizova unyengeri kugamuchira mubayiro. Iye pachena akatsigira kuchinja British sarudzo hurongwa kubva wokutanga-vanopfuura-the-mutsetse kuti dzimwe kuvhota nokuda pakusarudza nhengo kuti House of Commons vari Alternative Vote referendamumuna 2011. 