reporting level
Can someone please tell me if there is a requirement to report reaching your final cruising level when in UK airspace. Obviously when you change frequency you report your level, but having checked your mode c read out when climbing out of, for example, Heathrow, it seems to be a bit needless to clutter up the rt with a 'reaching' report.
Do you controllers out there need it, or is it an irritant? A reference for any requirement, or not, would be much appreciated. Any US controllers also care to comment?