Hello ,my neighbours demolished their garage which was adjoinig mine.The wall which used to sepearate the two garages which ran the length of the garages is a party wall, the dispute has been resolved after solicitors ,engineers and surveors got involved as they did not issue a party wall notice.This was about 2 years ago , now i have water coming in through a damaged part of the roof where it joins the party wall -how do i get access to there garden to repair this , because of this dispute things turned ugly and they were issued asbo's by the police where do i stand legally ???