Can you crack it? - GCHQ

[tlrBeta]

Not sure if anyone has noticed this yet, GCHQ trying to advertise more awareness by creating a little test for possible applicants. Your task is to crack the code:

http://www.canyoucrackit.co.uk/

Personally, I have never really attempted any code breaking and as such I already know this is way out of my league.

Maybe someone could share some basic knowledge on how to approach a code of this sort?

 

[tlrBeta]

Assumming that's legit, Youtube is blocked from my work :/

 

[tlrBeta]

Blimey, I only just noticed that also.

Maybe everyone on the forum just wants the answer and how to guide

I also just noticed it is near the top of google when you search, probably has added a few thousand views.