Royal Lady Now I really don't want to appear ungrateful - but if you've already bought a ST, then being able to buy tickets for a fiver for 2 friends/family members is surely helping them out, not the ST holder - so advertising it as if it's a good deal for ST holders is a tad wrong isn't it?
But they don't have a mailing list for "friends of ST holders".... and anyway it is good for ST holders, since they get the benefit of passing on a bargain to their friends/acquaintances.