There has been a question regarding Millionaire before.Think it was on AB. How the whole programme is made in stages .
When I was watching Classic Millionaire on Freesat a few weeks ago, one of the contestants got to about the fifth/sixth question and she was wearing a red blouse. Then we had the break and to my amazement ,when it came back on she was wearing a white blouse. The same thing happened again in a later programme---Man wearing a coloured shirt,adverts.break, man wearing different coloured shirt.
Another thing is that the person answering the questions always has a relative in the audience and Jeremy always knows everything about that person even though he is not supposed to know who is going to win the 'fastest finger first'. This programme is probably pre-recorded and pieced together.