Raleigh acquired the BSA bicycle manufacturing facilities in the late 50's, and to some degree from that point on they were little more than rebadged Raleigh's. Therefore, having Raleigh branded componentry is common, and the later the machine the more it is likely to have.
My gut call on this one is circa mid 60's to mid 70's, more likely the later part of that date range jusdging by the cable routing, so not terribly old. If you're interested in the age then the rear hub is liable to have a date code, as are some other components. Is there a frame number visible anywhere?
The frame construction, particularly the cast lugs and rear triangle arrangement, mark it as a fairly low end machine, so even in its day it was likely an inexpendive machine.
Unlikely to be valuable, but on the plus side it looks like it wouldnt take a lot to make it into a rideable machine with plenty of life left in it.