Got the same e-mail, they must have gotten our addresses from FT.
No intention of using them without some more disclosures regarding how they get the tickets.
When living in the U.K., I had good luck with Travelselect.com, from which I bought a discounted J class ticket from London to Hong Kong on Swissair for a little over $1000. I even got to fly CX using the SR codeshare (this goes back to March 2001).