Thought I'd make a little comparison.
Blue: 1960's Newpin.
Green: 1970 R20.
Maroon: 1980's R20.
Red: R20 with reduced rake (more than - 15mm).
All steerer lengths are the same +/- 1mm. Two have been cold set to 100mm OLN. Note that the later (maroon) R20 fork is wider at the crown by almost 10mm. I haven't used the red fork (yet) as I overcooked it on the press a little, making the brakes a reach too far. Interesting to note that the old Dawes fork has lugged fork ends, I wonder if this is general? Also worth noting that the rake of the Dawes fork is the largest.
Fork Rake for the two standard R20 forks was measured at 55mm, and the modified red item was 37mm.