It is a beat, but typical 1973-1976 Raleigh Gran Sport with the reversed color scheme (more typical was the white w/blue panel variant). Crankset looks to have been substituted with a TA Pro 5 Vis; RD a Shimano of one kind or another.

The model is listed in the catalogs available below:
Raleigh Catalog Archive

I hesitate to ask, but what is the serial on it?

-Kurt