The Communities and Local Government department gives guidance on the issues relating to High Hedges (pdf) and a number of frequently asked questions which will help you decide if your case can be investigated by the Council.
High Hedges Guidance notes for the complaint form(pdf). Please read these notes in conjunction with the Application for determination of a High Hedges complaint. It is important that all steps are taken before you involve the Council as the fee of £400.00 is payable for the council to make judgement and you may be unsuccessful.
Application form for a determination of a High Hedges complaint.pdf
You will need the free adobe reader software to open the pdf documents above