Secondly, it's been openly admitted that some of the video footage was not actually what it was supposed to be. This could have been a mistake or intentional but after seeing the first Moon landing shown continually on TV programs for many days afterwards I suspected even then that all was not what it appeared to be.
Bletchley Park was a top secret organization with employees with top secret clearances in a time of war. And in this day and age, many details that were once secret have been well documented, discussed, and accepted as fact. The same cannot be said of the notion that the moon landings were fake.
And regarding this openly admitted erroneous video, would you please elaborate and provide links? I've never heard of this.