His prewar activism on behalf of the cause of Enosis and the circumstances surrounding his death made him one of the most important figures of Greek Cypriot nationalism.

In April 1903, he exploited the absence of a single Turkish Cypriot member of the council to pass a resolution which declared that the people of Cyprus aspired to reunite with their motherland (Greece).

He also served as the mayor of Limassol from 1908 until his death, his most notable achievements being the erection of the city's first public garden as well as the electrification of the street lighting, the first such occasion in Cyprus.

Upon returning from his visit to Great Britain in June 1912, he became convinced that the only way for the Enosis between Cyprus and Greece was an intermediate step of autonomous rule.

His stance drew sharp criticism from his political rival Nikolaos Katalanos who described the supporters of autonomy as madmen and traitors.

On 17 October 1912, Sozos departed from Limassol as part of a small unit of the Cypriot Red Cross which headed to Athens in order to assist the Greek army which at the time fought against the Ottomans.

Goold-Adams and his successor as British High Commissioner to Cyprus John Eugene Clauson, praised Sozos in their last and first addresses respectively.