temple newsome house in leeds

Is this lovely huge thing Astilboides tabularis? Or is it a Gunnera, or Brunnera? These three seem similar in their growth habit and leaves...the pictured plant likes moisture and I see loosestrife growing beside it.

very good question.
as this was growing on an estate there was no one around to ask.
i just loved the structure of them all over the estate.
i just assumed it was a type of gunnera.
i could be wrong.