well thanks for the clarity gentlemen
in answer to the innisial question, in MHO finding a tree inspection course almost impossible, there is the QTRA witch is more a methodology of assessing risk in an arb context, interesting, a useful tool.
The LANTRA accredited basic tree inspection, delivered by many training providers including the AA, a simplistic training course aimed at for example a park ranger who may well be asked to 'keep their eyes open for any problems'
The Prof Tree Inspection, again LANTRA accredited and delivered by a number of training providers including the AA, but it would appear from comments hear that there are mixed feelings about it, personally, i found it very interesting,but perhaps it is very trainer dependent.
OCA used to deliver the M&C based method in to large customers, again interesting with a points system for applying an action level, so some eliments of tree related issues but with a risk assessment take on things.
Caple manor College Enfield used to do a basic tree inspection course over 3 days witch covered a range of subjects including basic reports, simple plant id recognition of simple mechanical faults etc, but that has now been replaced with the lantra 1 day course. they also used to do an advanced tree inspection course that looked at some simple soil science data collection for specific matters and some gadgets such as resistographs etc, this has now been replaced by the PTI LANTRA cource.
thats about all i have herd of except on the odd occasion colleges have tried to run them on there own.
so good luck in finding a cource and i hope what ever you choose is helpful to you.
as for the other stuff debate is a good thing, i disagree with some of the things stated about the AA, but well i pay my member ship to several bodies becase at the end of the day no single one gives me all i whant,
so happy hunting, stay lucky, and ohh no need for google a perfect use of the noun.
arbocop