Thanks for all the helpful comments.
I had another session on image yesterday morning and still could not find a cause for greenish cast.
Found another image in the sequence where window frame has photographed white and sky is blue! there was most possibility a change in daylight between the two shots.
The shoot was last March so exact details have gone from memory, the location was a local village hall and I wonder if there is some strip lighting messing up the colour balance.
I have looked up the Exif and see Auto WB Daylight iso 200 but no mention if there was fluorescent light involved
I mostly shoot on Auto WB, save forgetting to reset - memory gain.
Printer nozzle check appears ok.
One interesting point, printer ran out of ink 2" into one of the prints. CIS system - I reset chips and put the same sheet of paper in. The paper register was SPOT on, just a darker print when it printed twice.
I would add that to take the shot I was pushing to the limit, exposing for the sky and outside details, the model is very dark and Ultimate gave it a top fill of 20! to recover detail
I will return to print when time available.
Jeff