The first time was April Fools' Day, which may offer some explanation. It's hard to think of an excuse for today's effort.
When the Daily Star drops the bikini-clad women and the Express the quack cures in recognition of the importance of the Nepal earthquake and avalanche, why is the Daily Telegraph filling its splash space with propaganda and reducing the news to a puff?
This isn't journalism.
19.00 Update Alex Sturdy has done some splendid work on the history of this letter, which he says can be traced back to Karen Brady and Conservative Central Office. He reports that many signatories have asked to have their names removed.
This is journalism. And you can read it here.
Hats off, too, to Andy Hicks for posting this .pdf properties screenshot, showing the author of the letter as CCHQ (Conservative campaign headquarters).