I'm guessing this is in the "Lake" District? My Mom lives in "Lakeland" and there are lots of lakes there. In the case of Lakeland, I think the lakes may have been holes in the ground from phosphate mining and they just filled up with water. Don't really know. No pretty hills around Lakeland like there is in this photo.
Your guess is spot on Larry...it is a photograph taken at the Inn on the Lake in Glenridding - we stayed here in May, and had dinner there last week when we were staying in Penrith...a beautiful gem of a place in a wonderful setting - especially when the weather is kind, as it was last week!