My apologies, I confused island and town.

Here's the correction:
The island of Cumbrae has a town, plenty of tourism,
named Millport.
I was wrong when I said that the island was named Millport.

Book No. 8 is said to take place in Millport, on Cumbrae.
Knowing how wild Douglas Lindsay's plotting can get, though,
a number of things are possible:

the story may take place entirely on the island,
or the plot may travel to other spots and return to the island.

Whatever, it would surprise me no end
if Barney Thomson ever went back to Glasgow,
which has too many bad memories for him.