The overcat? [Look, he's a dad. He is obligated to make the occasional dad joke, even in the worst situations. Perhaps because this is the worst situation.]

Hang in there, Nathan. We will get through this. Whatever it is. Us blokes on the right side of the Pond need to stick together, right?

[He raps his knuckles against the wall sharply twice, just a little reminder that he's physically there, not just a voice, even while they can't see each other.]