Guest Stars Juliet Stevenson as Carol Fiona Button as Lucy Cariad Lloyd as Scoopy Tom Stuart as Stefan Cash Holland as Luna Amelia Streeks as Marie Jack Gleeson as Casper Navin Chowdhry as Steve Alexis Rodney voices Dr Jekyll & Mr Yoghurt Sheila Reid as Mrs Answers Vanessa Hammick as Scoopy's Patient Bella Heesom as Beth Aaron Collict as Stripper