Just had a Premium Bond Prize. There was an insert in the envelope:
"New warrant design coming soon"
"NS&I will be introducing a new warrant design ... from January 2011"
So they've managed to change the warrant design, but haven't managed to replace the warrants with BACS payments (or even offer it as an alternative). I wonder how much the new warrant design cost: what a waste of time and money. I wonder if the 21st century has reached NS&I. NS&I manage to get themselves a modern call centre