After a short delay we can now announce the winners of Challenge 2A prizes. Each of the following teams has been awarded £25 which will be sent as a cheque. As usual a couple of teams have not got back to us to confirm their details, Optimus Prime's team from Nelson Thomlinson School and Enripisa from Queen Elizabeth's School. if you can get back to us we will make sure to process your prize too.

Prizes for Challenge 2A

Erm... from Queen Elizabeth's School

Jamie Rosenberg Michael Pettit from Hampton School

Phoebe Price Polly Harlow Amanda Allcock Ann Zhang Olivia Yu Fairooz Islam from Manchester High School for Girls

Hannah and Anna from St. Annes Catholic School

Saim Haider from King Edward VI Aston

Joanna Craufurd from Queen Mary's College

Winners for Challenge 3A will be announced here at the end of Challenge 4, but you will hear before then if you have been selected.

Harry