Siobhán McSweeney hosts a special Christmas episode, joined by celebrity contestants Hugh Dennis, Sophie Duker, Alice Levine and Joe Swash. Judges Keith Brymer Jones and Rich Miller set two festive challenges - hand-building a Christmas birdhouse and a surprising second task where speed is of the essence, as the celebrities take to the wheel to see who can throw the most festive nibbles bowls.

The remaining potters create a pyramid vase centrepiece and a daring sgraffito globe. Who'll be on top of the world when they're crowned the series winner?

It's a bathroom-themed semi-final as the potters make Turkish bath-style sinks and tiles and attempt Moorcroft tube lining. Who will be feeling calm, and will there be water works?

The potters face an altered reality as they radically alter a coffee set and throw high-footed rice bowls. But whose shapeshifting creations will transport them to the semi-final?

The remaining potters go wild as they create metallic-effect endangered animal sculptures fired in oil drums, before throwing a thin-necked vase for a place in the quarter-final.

It's an illuminating week, as the potters make an embossed table light, before guest judge, fashion and lifestyle designer Henry Holland, really tests their decadent design skills.

The remaining potters head for the roof to create gargoyles and chimney pots for an expert guest judge. Who will be named potter of the week and who'll be cast out of the pottery?

It's Raku Week, and the potters hope to impress the judges with their hanging planters. Series two semi-finalist Freya Bramble-Carter sets a challenge with a decorative flourish.

It's Retro Week, and Siobhán McSweeney takes the remaining potters back in time as they make a trio of flying birds and tackle an old-fashioned hot water bottle surprise challenge. 

The 11 remaining potters craft a keepsake box with a disguised lid before facing a surprise blindfold challenge. Who will be potter of the week and who will leave the pottery?

The battle of the clay returns, as 12 home potters compete to become champion of the pottery. They take on a birthday tea set challenge, and make handleless jugs.