Thanks MrSimonR.

I wonder if there's been some kind of recent "reset" on availability... I only say that because I have checked every single day between now and July 2015 (when I'm looking to travel), and there is not a single Avios ticket available for IKT - DME in either cabin! (I've searched slightly less comprehensively for UUD - DME also, and there's zero availability for that also.)

I'm used to limited availability, but when there's zero in the near future, zero in the next couple of months, and zero in the summer - that makes me think that the tickets just aren't being offered!