Outside mathematics Wall has many interests including home wine making and an interest in politics which has seen him as treasurer of the Wirral Area SDP from 1985 to 1988 and then becoming a member of the Wirral West Liberal Democrat Party.
Sa labas ng matematika Wall ay may maraming mga interes kabilang ang mga bahay alak at paggawa ng interes sa pulitika na kung saan ay may makikita sa kanya bilang ingat-yaman ng Wirral Area SDP 1985-1988 at pagkatapos ay maging isang miyembro ng Wirral West-demokratiko Partido Liberal.