Defective pump module
I had the same problem and the unit has been replaced by the dealer (at my expense). The engine cut out just after an overtake. Had it happened slightly earlier in another overtake the situation could have been catastrophic. I am amazed that such a critical part can fail (imagine if aircraft engines failed and they fell out of the skies because of defective pumps). I am writing to Mottorrad UK to complain. I wonder how common this problem is ?