Alan Turing £50 note released today - solve the puzzles ?

[Mbitr]

The Alan Turing £50 notes has entered into circulation today in the UK. It’s a polymer note featuring the influential mathematician, who played a highly significant part in cracking the Enigma Code during WWII.
GCHQ has also created the ‘Turing Challenge’ - a set of 12 puzzles to solve.
Can you solve them ?

https://www.bankofengland.co.uk/news/2021/march/the-new-50-note-unveiled

Puzzles found here

https://www.gchq.gov.uk/information/turing-challenge



Good luck all