F3G....
In the resulting report, it emerged that ATC were not aware of the other a/c and that only good lookout by my a/c had prevented a collission.
THEN it wouldn't matter
what type of service you were getting if bounced my an unknown.
Your actions were commendable, in looking out the window in that VFR type of way!!
And anyway, a question for you......
You may be interested to know that the only reportable airprox I have ever experienced was whilst under ATC in the circuit at a busy south eastern airfield.
Can you file an airprox at a FISO/AG unit?!?!? Aren't all Airproxs' reportable?