Re:
Wonderful project with original parts.
It fits in the middle of my period of interest.
There are many resources out there for most of the components and plenty of techniques we have acquired.
If you are looking for practical advice, I think you would enjoy reading
7VEN's 1947 Hobbs of Barbican Clubweight Build and many other old builds
and to a lesser degree you might get something from my
Hobbs of Barbican 1946
Mikes bikes are beautifully photographed
1948 Rotrax - latest project and
1950 Jim Guard Cycles of Southampton - Eroica Steed
If it were my bike, I would get some penetrating oil and apply to every nut, bolt and screw. Read some of the stories with a notebook and a pen close by to aid your recollection.
Reapply the penetrating oil and read some more. Repeat a few cycles over a few weeks.
Then test the fittings to see if they will yield.
Take lots of photos and post them, ask questions, evaluate and apply the answers.
And contact Mark Stevens, who has a wonderful knowledge of Gillott's.
His are in
his Flickr albums.
I would think most of your components are in the
1952 Brown Brothers Catalogue, including your Dunlop Special Lightweight rims on
p199.
Be in no rush, and enjoy the project.