Right up there with Dave "Porcu-phile" Cameron's "Lets Ban Encryption" suggestion. I love how the Social Media companies and others get it in the neck - But no one is suggesting that Pen & paper companies be banned because you write encrypted messages on paper, or that there should be back door into every letter and photo-copies made.
All Home secretaries seem to be at the whims of poor advisers, or maybe it's politically convenient to blame companies....Like blaming everyone about TAX evasion, when they write the TAX law.....Simple, write better Tax Law.