Daily Mail says yes:
http://www.dailymail.co.uk/news/article-5655473/Hugh-Fearnley-Whittingstalls-River-Cottage-HQ-set-expanded.html

Natural England seems not so sure and there seem to be unresolved drainage issues:

Click to access 010518combineddmcagenda.pdf

(page 107 onwards)

But all should be well as Oliver Letwin MP has written in support.

To be decided tomorrow