This is an interesting article on the Raleigh Professional
https://on-the-drops.blogspot.com/2016/12/raleighs-bike-boom-flagship-raleigh.html
Difficult to date mine. It was 'loaned' to me when I joined VC Europa in 1978 and never collected when I left them in 1981 - why I still have it. VC Europa were a Nottingham club with some connection (I was never sure what) to the Raleigh factory and some of the committee worked in the test lab so there was kit going back and forth regularly between riders and club. I think you got 'any old frame that was available' in your size - hence my Professional in 24.5" and team colours.
Hard to date the frame as
It has the CC cut out on the bottom bracket (post '73), the Latin Line head lugs, fastback seat stays and fluted chainstay. It has the 47/48mm off set forks with chrome fork crown (under the current paint).
Re-badged since it's first renovation
https://flic.kr/s/aHsjvfh96o