Katherine Ryan welcomes back the four semi-finalists as they return to the workshop to create beautiful pieces in the two penultimate challenges. They must impress the judges by designing and creating a bestselling set of asymmetric earrings, before making a pair of bespoke cufflinks for a special client who selflessly patrols Birmingham's streets to keep people safe. Expert judges Dinny Hall and Shaun Leane decide which jewellers will secure their place in the grand finale and who will be leaving for good.