At this point, Neville Chamberlain is still PM and Churchill is First Lord of the Admiralty? With the results, (so far) of the Norwegian Campaign being much more favorable, those two gentlemen likely remain in their positions - at least for the next month or two. How any Battle of France and the Low Countries shapes up may impact their status, but that's still on the horizon.
Chamberlain wasn't a very scintillating orator, so comments from him regarding the Campaign are likely pretty dry. However, I could envision MP Churchill standing up in the House of Commons and laying on some stirring reference to Hitler learning to "Beware of the fury of the Northmen"