24 Hour Garage?

I park my car outside this building at The Barras Market in Glasgow every day of the working week. I have done for the last four years. Monday to Friday without fail, well unless I'm poorly, of course.
I don't think this is really a 24-hour garage. Certainly not in the respect that Tesco is a 24-hour supermarket. But regardless of my suspicions, I always make sure that I don't park directly in front of the shutter. I'd hate to cause any problems should they have a surprise oil change to perform and need emergency access.