I remember reading Black Echoes in March 1983, and "Hey Girl You've Changed" was No. 2 in Chris Plant's playlist ("Bring Your Fine Self Home" by the Soulettes was No. 1). But I heard Gary Rushbrooke play it a couple of months later, so maybe Chris obtained his copy elsewhere? Keb Darge and Ian Clark were also playing it at the time, so that would have made at least 4 copies in circulation when it was a 'newie'.
As well as Tommy Wills's dubiously named single "Man With A Horn" (and an LP of the same name on the Terry Gregory label which, like some Airtown releases, had the saxophone logo on the label), there are at least two other soul singles on Airtown. "That's The Way" by the Casinos and "I Still Care" by Virgil Murray (also released on Kool Kat). The copy of the Casinos I once had was pressed on vinyl. Not sure if these were local issues before the Terry and Kool Kat releases respectively, though.
Of the three Airtown 45s listed on 45cat, the numbers all seem to have a prefix of JB (presumably meaning 'Juke Box'): https://www.45cat.com/label/airtown