Well done to everyone this week. Did you spot that Monhier's message to Lord Pennylaine was encrypted using a keyword substitution using the keyword FRANCE? He may be a treacherous enemy of the British Empire, but you have to admire his patriotism. A curiosity of the cipher this week was that the letters S, T, U, V, W, X, Y and Z were all substituted by themselves. Here is the substitution table Monhier used in part 3B:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| F | R | A | N | C | E | B | D | G | H | I | J | K | L | M | O | P | Q | S | T | U | V | W | X | Y | Z |
And now the announcement you are all waiting for: here are the winners for this week's part A prizes:
| Keir Edwards, Tom Russell and Benjamin James from Queen Elizabeth's School Carl Martyres, Jonathan Hughes and Edward Rewse from The Kings School, Peterborough Example B from Our Lady's Catholic Primary School Meeting Place from Southend High Shcool (sic) for Boys Georgina Hughes from Harlington Upper School Matt, Ollie, Connor, Jack, Corey and Matt T from Bishop Milner Catholic School Claire Baily, Beth Hutchings and Beth Norris from Honiton Community College Jane, Tess, Abi, Hannah, Eilidh, Jack and Joe from Newminster Middle School
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PS Harry might or might not be an alumnus of Westcliff High School for Boys, so he is delighted to see that the team from the old enemy, Southend High School for Boys can't spell School! This is a useful reminder to everyone to make sure their profile details are correct and complete.