A Raleigh of comparable quality from this era would have been built in Worksop, and have had a serial number that started with a letter. E would designate 1970, and the serial number would have been stamped on the bottom bracket - with the exception being on the Grand Sport and Super Course, but the lugs and dropouts eliminate those as possibilities. The lugs and seat cluster do look very similar to those on my 1970 Professional, but there are differences also - in the fork crown and also the OP's bicycle appears to be lacking the arc'd rear brake stop which all the mid-upper tier Raleighs of the era had.