Thanks so much for the considered replies. The difficulty I face is that some of the page breaks are actually very useful. The OCR seems to have put in page breaks at the end of pages, which keeps the pages in the correct order, and allows me to add returns without putting the pages out of kilter, as I believe would happen if I removed all the formatting.

I'm happy to individually change each page that has gone landscape, I'm just not sure how to do that.

It is annoying that the document has added tables in at times when clearly there was no table in the original document. Is there a way just to remove tables, without removing other formatting?