Hmmm ... you said 'innit'. Oh dear!
Anywaaay, no Tesco here [Thanks be to God] but we do have Waitrose. In fact, within a very short walking distance, where both I and the OH burn food purchases on the old BA Amex on a daily basis.
But, honestly, isn't it a bit tacky flogging good old BA Miles to some High Street retailer, or an Internet amorphous body? Isn't it
surely all about getting on a decent, reliable airline, using Miles/Avios/Thingies to "Fly The Flag", "We Fly To Serve" and "Beef or Chicken"?