Telecommunications company Spark's full-year profit has jumped 91 percent to $499 million, due largely to one-off gains related to the sale of data-centre assets.

Spark’s reported net profit rose 91.9% to $499m on asset sales, but adjusted profit fell.

Telecommunications company Spark's full-year profit has jumped 91 percent to $499 million, due largely to one-off gains related to the sale of data-centre assets.