Yeah I hate those ads. And I agree they are a completely unconvincing couple. Plus that woman, with her round-eyed moony face, has always irritated me. She played Tom's whingey partner in series 1 of Spooks.
What really irks me is when the bloke has hung those sacks to store the girl's toys in, the smug little brat empties it all back on to the floor while everyone else, including pudding-faced mum, smirk. If only it then cut to the next scene in which the girl and her mum & siblings are all stuffed inside the hanging sacks while the fed-up My Family bloke uses the special BT package to order in some take-aways and escort services.
Oh and, yes, I too know it's only an ad (though you probably wouldn't guess it).