What I want to know is the opposite. Can I transfer from a new Tesco account into a BAEC account that HAS received miles from Tesco. Or has this been categorically ruled out?

I want to take advantage of this offer, but do not want to incorrectly set up a new BAEC account. The only option on this front that I can think of is to set one up for my as yet unborn child, but then I'd need to get the details changed by calling up once we have a name and birth date!!! No sure this is a good idea.