While it couldn't legitimately be described as a con, the double points thing isn't really all Tesco wants it to seem. There's been a very marked reduction in the bonus miles items we have seen in the past and now we're having to take a hit on redemption levels. The chances of restoring the old redemptions when the double points ends are NIL.

I'd be very interested to see if there's been much of a difference overall in the number of CC points given out before and since they started the promotion. My hunch is that they've just levelled it out across their customers as a whole rather than continue to allow a minority well-informed group to exploit the system.