SA Premier Steven Marshall vows to deliver

South Australian Premier Steven Marshall has delivered his first major set-piece speech since the state election, in which he reiterated several promises.

SA Premier Steven Marshall has promised to deliver on election promises in his first major speech. (AAP)

PROMISES MADE BY SA LIBERAL PREMIER STEVEN MARSHALL IN HIS FIRST MAJOR SPEECH:

* Deliver on the Liberal Party's election promises "in full".

* Lead a reformist government.

* Deliver business tax cuts and cut costs for consumers to foster economic growth and job creation.

* Backed decisions to make the public service more efficient and responsive.

* Committed to growing the state's population as a priority.

* Allow South Australians to succeed without unnecessary interference from his government's administration.