I've always found it much more natural to include flight rules with the adep/ades i.e.
G-CD,
Cessna 172
IFR from Borton to Walden,
15 NM South of Westbury altitude 2500 feet
The flight rules are, in most countries at least, a statement about the nature of the flight, and can help to set a context for your intentions, request etc. That is, however, a deviation from CAP413.