He worked for the Southern Rhodesian Government in its income tax department for the next ten years.

[3] By 1962 Wrathall was no longer a supporter of the United Federal Party and became a founder member of the Rhodesian Front under Winston Field.

[6] Wrathall was among the members of the Rhodesian Front who deposed Winston Field and instead installed Ian Smith as Prime Minister in April 1964.

Known as "the quiet man of Rhodesian politics", he nevertheless was a key figure in the secret struggle against United Nations sanctions imposed after UDI.

[10] In July 1973 Wrathall ceded his responsibility as Minister of Posts; during the 1974 general election he stood down from the House of Assembly and transferred to the Senate.