Thanks to help earlier on this thread, the OH and I successfully enrolled for IRIS when outbound on 27 April ... and have Registration Reports to prove it!
On returning through T5 on 18 May, I passed through the IRIS booth with no difficulty ... but the OH's attempt failed completely. The e-passport booth did, however, work for her.
So ... 50% success, but at least I now have 3 ways of getting back into UK, and she has 2 options
