Lancashire-based Molly tackles a cake with some bite with a giant white shark birthday cake, sculpting its realistic features and razor sharp teeth from over 15 kilos of fondant. Eloise's architectural cake for Essex Pride goes up in rainbow coloured smoke. The colourful cake take on Chelmsford's Town Hall is built from a 100-egg vanilla sponge, sandwiched with two kilos of rainbow coloured buttercream. Decorated in six kilos of fondant and florist paste, its intricate details take a whole day to sculpt - all of which hides a special colourful surprise. Nastassja's busy shaping and coating the two spherical sponges for her stunning sea urchin inspired baby shower cake.

Cake makers Phil and Christine must work their magic to create not just a fairy tale cake, but a whole enchanted landscape. Eloise tackles an 18th birthday cake that's just the ticket with a tube train cake. And Michelle marks a medical milestone.

Former army helicopter pilot Rosie preps another epic design: a three-foot-long cake to look part dragon, and part boat, decorated in 25 kilos of intricately sculpted fondant and edible paint. Meanwhile in London, fashionista turned cake maker Nastassja, takes on one of her most challenging cakes to date: an intricately decorated time piece cake with two tiers, each with a hollowed out clock face, adorned in roman numerals representing the birthday girl's date of birth. In Dunstable, Karisha faces a tricky balancing act with a floating tiered cake. Built on a massive two-foot wide vanilla cake base, the four-foot high creation gives the illusion of floating tiers, with see-through separators, carefully disguised with over 500 handmade sugar paste flowers. But an accident during delivery tests all her skills to avoid disaster.