[Ashley.]

Channel 5 are making it up as they go along, so they don't need to replace Aaron.

C4 used to replace housemates because they had the entire series planned out - if they were down on a housemate, it would mean that they couldn't do that double eviction they were planning to do, or there would be one less housemate in the final, so they filled the spot so they could do what they planned.