Erica HurstErica HurstA 42-year-old raver, a lap-dancer, and a former drug addict...

These are just some of the 13 contestants taking part in the revamped reality show, Castaway.

The castaways have been shipped off to Great Barrier Island - a tiny, isolated island located 50 miles from Auckland, New Zealand.

But this is no holiday, as the 13 contestants will face a stiff battle for survival for 12 gruelling weeks.

They'll have to build their own shelter... food and water are limited... and no modern amenities will be available.

One castaway will be a viewer, who will join halfway through the series on week eight.

And while there won't be any evictions, the castaways can find themselves off the island if they cause any problems.

The weekly series, presented by Danny Wallace, begins this Friday on BBC1 - time to get the Sky+ at the ready.

Take a look at the 13 contestants taking part in the ultimate fight for survival in the gallery above...