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.

Nastassja makes a three-foot-tall spiral cake from salted caramel, mango and passion fruit sponge, complete with 70 sugar shards circulating from the top and a hand carved corkscrew effect. Meanwhile, Molly bakes for Blackburn Hospital, with a spectacular creation standing two-foot tall, using 25 kilos of fondant icing to make 29 handmade figures of staff and patients. The five-tiered chocolate fudge cake celebrates the NHS's 70th birthday with a colourful cross-section of health care services. Eloise attempts her first animal creation, with a giant dart frog cake with 42 frog cupcakes. Standing almost a foot tall and stretching an impressive two-foot-wide, the amazing creation is wrapped in 6 kilos of hand painted and glazed fondant icing.

This time, Molly makes a hand painted Giraffe Cake from gluten free vanilla sponge, buttercream and modelling chocolate. Ben creates a two-foot-wide scale model motorbike, with sugar paste figures of biking couple Janet and Allan, and their two dogs, Peppa and Benson, for their 20th wedding anniversary. At five-foot tall and weighing in at 18 kg, an African Impact Cake will be Nastassja's tallest commission to date. Formed from 15 layers of cinnamon sponge, the cake includes 54 edible 'mushrooms', which will represent the 54 African states, but it proves to be one of her most stressful bakes to date.