"Fellow cfi's and myself had meeting with aerodrome operator to change calls."
All calls should be in accordance with the published CAP!
In the case of A/G thats CAP452 The Aeronautical Radio Station Operator's Guide.
http://www.caa.co.uk/docs/33/CAP452.PDF
In the case of AFIS calls should be in accordance with CAP510
Most of the calls contained in these documents are als reprinted in the CAP413 so that pilot's dont have to find the other documenrts.
If you are flyinf in a circuit with A/G or AFIS the following calls are legally required:
a. Obtain traffic information prior to entering ATZ
b. Report entering and leaving ATZ
Thereafter, all calls are advisory, report where you are e.g. Deadside Descending (this meets the legal requirement to report entering the ATZ) Downwind; Final; Going Arround etc. To clutter the frequency with garbage about your intentions, positions of other aircraft is just RT indiscipline. You are flying VFR, LOOKOUT, if you can\'t see the other traffic that you must have been told about (thats why you report entering and leaving the ATZ) then ask for its position if not, SHUT UP and LOOKOUT.