Thank you to Ian Bartlett for allowing
me to reproduce the photograph above.
"Ayton was operating from
Shipquay Place, Londonderry, by 1884.
The studio building still exists
and is used as offices. A local developer has bought the site and the
buildings will become a hotel & restaurant. The exterior will be retained
and the glass loft that was his studio will be restored."
Here is an early view of the studio: