Coronation Street spoilers follow.

Coronation Street's new business duo Sarah Barlow and Michael Bailey make a big mistake this Christmas.

The Underworld colleagues have been making secret plans to team up after Sarah spotted that Michael has an impressive talent for fashion design.

Sarah and Michael have been holding off on moving forward with their big idea, as they're awaiting investment from Sarah's uncle Stephen Reid.

The pair are unaware that Stephen is facing a financial mess and is unable to help them.

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In scenes airing over Christmas, Sarah reminds Stephen that her new venture is good to go once he hands over the funding.

Stephen squirms, wondering how he can get out of this latest mess.

Meanwhile, Carla Barlow is shocked to discover that Sarah is planning to launch her own brand.

Carla confronts Sarah at work, leading to an angry row. Sarah ends up dragging Michael out of the factory, announcing that they both resign.

michael bailey, sarah barlow, coronation street
ITV

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Stephen tries one last time to get his new friend Elaine Jones to help Sarah out. Unfortunately, Elaine isn't able to either, as her house sale has fallen through.

Sarah and Michael are forced to return to the factory and beg for their jobs back, but will Carla agree after the earlier argument?

Coronation Street airs an hour-long special on Christmas Day, with Fiz Stape and Tyrone Dobbs taking centre stage.

Producer Iain MacLeod recently told Digital Spy and other media: "The episodes are fun, warm and family-orientated. Corrie has historically always done that.

tyrone dobbs, fiz stape, coronation street
ITV

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"A few years ago, we went a little bit Die Hard with Gary, Shona and the funfair. I absolutely loved that. It allowed us to do a thriller-ish conceptual trailer for it, so it was all very exciting.

"But we're right in our wheelhouse now with this Christmas. It's got loads of comedy, family fun and warmth. I cried twice in the viewing – and I'm not given to tears! It's really moving and lovely. It's not sad, but in a 'warm your cockles' way."

Coronation Street airs on Mondays, Wednesdays and Fridays at 8pm on ITV1 and streams on ITVX.

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