Thanks chaps for replying.
Some of you have mentioned that we should abolish FISO/AG etc. Well from my experience the problem with these services is the inconsistency in how they are provided. I reckon the CAA should put pressure on the airfield managements for not overseeing A/G operators properly. At one of my local airfields, the radio is based in the flying room so everyone including students, ground personnel, club members, and instructors start using the radio and come up with some complete nonsense on the R/t. Whilst us instructors are trying to instill discipline in our students flying, the management show no regard for standardisation/safety. I does make a mockery of the whole system which I'm sure would be fine if discipline was applied in right places.