Thanks for the comments (and for fixing the title, Sinner).
I moved to England two years ago and pass similar buildings on my way to work almost every day. So, they're not based on any particular building, but there are similar buildings all over England.
LEGO's own modular buildings really stand out because of their great details, so I didn't want to be too skimpy when it came to details on mine. The vent for the fryer is sometimes very prominent on buildings like this, as is the smell emanating from it ;), so I had have one. Of course, building details are a major part of the fun. The fish is actually pearlescent grey. It's not really very visible in the pictures, but it glitters a bit and does look rather fish-like to the naked eye. Still, I'll rebuild it in light blue and see what that looks like.
The modular building standard stipulates that the front and back of the buildings should be 7-9 studs from the edges of the baseplate. On a 32x16 baseplate that leaves only about 16x16 studs for the actual building. Stairs tend to take up a lot of room too, which leaves very little for the interior. That's why I like to add a little extension in the back. It also livens up the rear of the building a bit. I don't really want to have a blind or straight wall back there (like on Cafe Corner and Market Street) and many English buildings actually have little extensions. I was happy to see that the rear of the new Green Grocer set has more details as well.
I have both Market Street and Cafe Corner, but I didn't put them next to these buildings in these pictures. Market Street looks very Dutch to me -not surprising considering that it was designed by a Dutchman :D. Cafe Corner currently is still in its box. I built the chips shop instead of putting it together last weekend
. If I find the time to build it this weekend, I'll put them all next to each other and take a few pictures. You'll see that my buildings indeed are much lower than LEGO's modular buildings, but English houses tend to be fairly small.