When complaints turn into potential harassment

I have an excellent T who has received several formal complaints letters of different types from the local Council in under a year, and at least one no-warning visit. This is without any neighbour having a word first, with T or with me, which would be my normal expectation.

These have been addressed as appropriate, including a couple which are trivial and for which there's no legal recourse for action.

To me this seems to be potentially turning into a mini-campaign of harassment-by-proxy via the Local Council who have to investigate. It is clear who is doing it as all the other neighbours are happy, and another one is *also* being complained about.

My question: what is appropriate for an LL in these circumstances?

Normally I stay well out except where asked and where things need to be done to the property.

ISTM that I can:

* Supply background info to the local authority, such as property history, what changes have been made to address matters, that this is a long-term, excellent T etc.
* Ask them to keep an eye out for repeated complaints.
* Potentially ask the ASBO unit to look at the history.
* Recommend to T to keep a diary.
* Point out remedies open to T.
* Build a big fence :-).

Any other ideas?

Thanks

ML