PSA tests showed none detectable for years.
In 2018, they found 0.01.
October 2018, they picked up 0.03, so they asked for another test in January 2019.
A couple of admin. slip-ups meant that my review didn't happen until today. The reading was 0.111.

My next appointment will be with radiology, not urology.
They think that a few cells were left in my system, and they've probably migrated to lymph nodes and multiplied.
Not a happy visit....
.. But whilst in the big smoke, I bought another offcut of aluminium sheet, to make MkII of my Hurricane wheel/flap gate. (MkI metal stamping wasn't up to required standard). I'll let you know progress in due course.