Good Question Mark, but surely Ujima, having been played (albeit briefly) at Blackpool Mecca and then being revived (by yours truly) in the Main Room at Cleethorpes in 82 makes it simply an 'Oldie'.
The same can be said of some of the others I played at the time - Bill Harris "Am I Cold Am I Hot" Brothers Guiding Light "Getting Together" Invitations "Look On The Good Side" etc. They all became big in the Main Room at, what was then, the biggest Northern Nighter in the country and went on to be big elsewhere... but they aint what I would call "Crossover Soul" records....even though they've 'crossed over' yet again, such choons are just oldies... surely?
The term 'Cross Over' has been used in all music genres (particularly in the USA) for decades, but when, over here, we talk about "Crossover Soul" - as opposed to 'Northern' or 'Modern' - we are talking about that period late 60's into the early 70's... where (as per the examples I listed earlier) the tempo is more syncopated and less 'on the fours' ... or at least... that's what Rod intended the term to refer to.
Sure its a little confusing... but usually (as Blake H suggested to me) only to those who weren't there (Thorne) at the time.
As far as the UK Soul Scene is concerned Ujima is an Oldie... mainly because it was played on the Northern Soul scene before the 90's Canal Tavern. Had the record only just been discovered, I still doubt that it would be classed as "Crossover Soul" because the tempo/style does not fit into the genre any more than would The Natural Four "I Thought You Were Mine" ABC.... which is clearly a Northern Soul 'Classic' Oldie (Whereas the Boola Boola version is... Crossover!!).
Phew!
Now, am I making myself clear?
Sean