Last year, the company that ran Australia’s immigration detention network for more than a decade, British conglomerate Serco, lost its contract, but not before helping build what’s been called one of the world’s “most extreme and secretive” detention regimes.

The question at the time was whether its replacement – American private prison operator MTC – would be any better.

Eighteen months later, we have an answer. Recorded incidents across the detention network have more than doubled – from almost 800 to more than 1600 – since MTC took over.

At the same time, Australia’s offshore detention system on Nauru is expanding – hundreds more people are being transferred to the island, and the Albanese government has announced plans to expand immigration detention as part of its crackdown on visa overstayers.

Today, journalist Denham Sadler on the private companies paid billions to run Australia’s immigration detention system – and the warnings that were there before MTC took over.

This episode was originally published in January 2025.

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