Professinal indeminety insurance not underwriting advice on GM crops? why?

I have tried hard in Australia to find a Professional Indemnity policy to underwrite advice on transgenic crops, I have clients increasingly ask me about GM opportunities, but have to keep my mouth shut

Whats going on? is this only a east coast Australia thing?

Does anybody know a insurance company that will underwrite GM advice and its professional indemnity risks in Agriculture /Horticulture?