As half cafs are becoming more popular, Craftdecaf's is definitely my favourite. I make espresso with the The Contortionist every morning. Only drinking half the caffeine means I can have twice as much! Ken and the rest of the team are great, friendly and really helpful. They have answered many of my questions and always quick to reply.
I have also taken part in the James Hoffmann Decaf cupping session and it was great that Craftdecaf were a roaster you could use and the coffee they roasted was great.
I cannot recommend Craftdecaf's coffee enough.