Although I've lived abroad most of my life I have never used this. I now live back on The Island and have grandchildren abroad but would not wish my children to send their issue over as an UM. The amount of paperwork involved on both the sending and receiving ends could lead to a numpty at one end or the other refusing carriage/acceptance thereby giving the airline and parents costs, not to mention disappointment to the child/ren concerned. Purely a commercial decision, I believe. It's probably another of these non-thought through Brussels edicts. Harrumph.