Cap 413 seems to want you to state entering the hold.
It also points out that:
All manoeuvres associated with entering the holding pattern are considered to be part of the holding procedure.
So, if more than 30d off the outbound radio, an aircraft will be entering the hold and thus, in my mind, should call doing so.
Pilot transmits callsign, aircraft type, position, flight level, flight conditions, estimate for the beacon and requests type of approach required.
When overhead the beacon, pilot reports 'Callsign, entering the hold, maintaining (altitude/flight level)'.
Pilot reports 'Callsign, beacon outbound' (in Figure 2 when overhead the beacon).
Pilot reports 'Callsign, base turn complete'.
Pilot reports 'Callsign, 4 DME' (or other position as