Roma Agrawal is a structural engineer who builds big. From footbridges and sculptures, to train stations and skyscrapers, she has left an indelible mark on London's landscape. She is a tireless promoter of engineering and technical careers to young people, particularly under-represented groups such as women. She has advised policymakers and governments on science education and has given talks to thousands around the world at universities, schools and organizations, including two for TEDx. Roma has been awarded international awards for her technical prowess and success in promoting the profession, including the prestigious Royal Academy of Engineering's Rooke Award. She was awarded an MBE for services to Engineering in 2018. Her best-selling adult title, Built: The Hidden Stories Behind Our Structures , was described by The Sunday Times as 'A fascinating celebration of the impact that structural engineering has on all our lives.[an] eye-opening book.

' Website: romatheengineer.com Twitter: @RomaTheEngineer Katie Hickey studied at Falmouth University and since graduation has created artwork for magazines, greetings cards and books. Katie has illustrated several books for children and enjoys combining narrative and information in her work. Having grown up in Cornwall, and also in the Middle East, she takes inspiration from her travels and surroundings to create characterful and atmospheric images. Katie lives with her family and dogs in the countryside just outside London. Instagram: @katiehickeyillustration Twitter: @katiehickey195.