Too little too late as far as Helen clocking Mark as far as I'm concerned. She had it all in black and white in front of her of what a lying attention seeking little worm he was during that fake prize money task and yet she chose to have a massive row at Christopher (who promptly absolutely destroyed her

)
Mark is hideous. I've got nothing to say about him and Matthew as that's a relationship that's started outside the house and has nothing to do with us as far as I'm concerned, but the way he treated Christopher was horrible.