Great bike :), always like to watch projects of retro road bikes, hope to see yours in the near future as well :). Keep us updated with the project. You will find some original parts, if not mistaken most of them are very similar to the Raleigh parts.
The leather sew-ons are very cool and neat IMO. Are you going to re-spray the frame or keep the original paint?
As legrandefromage said the frame looks like a late 80s frame.
Keep us updated with more pictures of the strip down and more information. :)