Yes, let's hope to see a vinyl/CD physical release one day

A few more info:

the May '71 single A side was not "Airport" but "Long Gone...", but actually it became a single in January 1973 for the next Graham Maitland band, Glencoe, where he found place for other two songs written with Philip Reed (maybe was he also with Glencoe at the beginning?), Look Me In The Eye and Lifeline.

FTB Airport and High Horse were not completely unheard, as they appeared on this Chrysalis promo
compilation https://www.discogs.com/release/4496011-Various-The-Chrysalis-Compendium-The-Sound-Of-Hush. By the way there are a few unheard Brian Chatton/John McBurnie (post-Justine, pre-Jackson Heights) songs there, it looks there are two albums' worth of unreleased material still in the vaults!