When I reached the cafe, it was closed. So I rang them up and was told that they only open at weekends as it ceased being a cafe and has become a bar/nightclub. However when I told them of my mission, they very graciously invited me in to take my photos, so many thanks to the owners.
Also, I must thank Seren Group who are in the tall building opposite who allowed me into their kitchen on the top floor to get the photos looking down.