Went for a Drive Clean test the other day.
Got a conditional pass.

I had driven the car for about 35 Km before heading over for the test to ensure things were nice and warm.
However the Catalyst and Oxygen Sensor reported NOT READY.

This is good for 2 years ... but any idea of what the cause could be and how to correct?

Mods to the car:
Replaced up-pipe with catless up-pipe
Tune by Innovative Tuning

MalcolmV