1.5.3 When instructed by the ATS Unit to 'Pass Your Message', the reply should contain the following information, whenever possible in the order specified:
a) Aircraft Callsign / Type
b) Departure Point and Destination
c) Present Position
d) Level
e) Additional details / Intention (e.g. Flight Rules, Next route point)
The above taken from CAP 413 states that flight rules can be notified to the controller as additional information. Flight conditions are pretty much irrelevant and as someone has said before, if the controller wants to know that information he'll ask. Of much more use is wether you are VFR or IFR.
I worked with an instructor that insisted on saying he was..."Inbound Victor Mike Charlie" every time!
Also the PACER acronym does not really fit the above requirement, I find that TRPAR fits much better. Type, Route, Position, Altitude, Request.