I'm back with yet another question. The question about universities was for my writing. This new question is because of something I've been reading.
I know you can read of the history of Westminster Abbey online, but since I've been reading Helen Hollick's Harold the King which features in small part the building of the Abbey, I've been wondering about the size. I know it was pretty big in its own right when Edward the Confessor commissioned it to be built, but is there anywhere online - or perhaps in someone's massive research volumes - that might give the actual dimensions of the Abbey? I'd like to know how tall it was originally to compare it to how it is now. Just for my own sake. Nothing more.

Thanks loads!
Rowan