virat bhavsar

in the both picture attacehd can any one give me clare idea of what and where is the party wall considered for the bounday wall? I am bit not sure about the title deed it says, in general about the 1996 partywall law where both side will have half and half rights. but as one can see in the picure the red box shows the hedge, which is no where in the middle of the boundary, its one side of the proprty more or less. please advise what to do in this situation? in the second piture shows two walls where the second wall was the small store which shows in the first piture befoer the hedge. Many thanks in advance.