Vinegar Yard ran between St Thomas' Street and Melior Place. In the earlier picture of Melior place (1984), Vinegar Yard came out to the right of the Horseshoe Inn, Rowley Buildings where just down on the right, the white space opposite the Pub. Map posted in St Thomas’ Street Topic, Thanks to Fosney.
I think this picture (2008) taken from St Thomas’ Street, with the Hop Warehouse directly in front, I believe is/was Vinegar Yard? though I could not find a name.