This is what I would have accepted for an answer:
CAO SECTION 40.1.0
Issue 6
AIRCRAFT ENDORSEMENTS — AEROPLANES
10 LOGGING OF FLIGHT TIME...
10.9 Instrument flight time may be logged by the pilot monitoring or providing input to the autopilot/auto-stabilisation equipment when it is engaged or by the pilot manually manipulating the controls when the aircraft is flown by reference to instruments under either actual or simulated instrument flight conditions.
Note: Instrument flight time shall only be logged by one pilot at a time.
As this includes the phrase "
under either actual or simulated instrument flight conditions." then you cannot log Instrument time in Night VMC or Day VMC, unless you are wearing a hood.