Here are the winners for Challenge 4A The book prize goes to ST Francis Xavier 6th Form College for the entry by the team Supremacy Vol 2 The following teams each win one of our £25 prizes: Christopher Dias, Anthony Pisarski and Riccardo Rossi from The London Oratory School MCOL, MCOP and MMUR from Honywood - Coggeshall Josh Cutler, connor Brooks , marshall Parr and liam Spensley from Guilsborough Benise Aulak, Stefanie Tann and Kari Clark from Gravesend Grammar School For Girls Jacob Baldwin and 9KE from Ermysted's Grammar School Bryden's Brains from Dedworth Middle School Tom from South Dartmoor Community College Bex from Arnewood Well done to all of you.