I have no problem with the idea that the Universe (sensu Gribbin) is finite. If that is the case, I would argue that nothing infinite can exist in the Universe.

Any reference to infinity in the Universe must be either a mathematical infinity or an approximation.

This just leaves two important questions unanswered:

"Can there ever have been nothing?"

"If ever there was nothing, could there be something now?"

I would not expect the answer to either of these to admit infinity to the Universe.

There never was nothing.