Tim Tams celebrate their 50th birthday

ARNOTTS has celebrated the 50th birthday of Australia's favourite biscuit - the Tim Tam.

The iconic treat first made it on to Sydney shelves in 1963.

Now, more than half a billion packets are produced at the Arnotts Huntingwood factory and sold across the country each year.

As part of the celebrations, QantasLink and Arnott's teamed up to fly long lost loved ones to relatives in the remote town of Winton.