Really sorry,
WJMcP - the irony went straight past me ...
... taking myself too seriously again ...
Yes, certainly any ATC issues can be raised post-flight in a report and, if appropriate, an MOR can be raised - by either you or us, of course.
However, generally I would have thought most problems are best dealt with by a phone call direct on arrival - wherever possible - to chat over any details while the issue is current, as indeed I suggested in an earlier post. In practice, this does require the initiative to be taken by the pilot and I always think it is a pity more do not do so; I hope you would agree.
In the broad scheme of things, we are all in the same business - so we should keep in touch ...
JD