As it's so easy for me to get there, I've visited most of the coastal stuff over the years - originally about 15 years ago with sons on the tandem, some photos back on pages 28 + 29 of this thread!
I am not sure that's right, seeming as SRAM changed their shift ratios between 9S and 10S. However one man's 'compatible works perfectly' is another's poor match.
Just back from a loop to see the Tour de France in Rouen. I'll keep it brief and let the photos speak for themselves.
Day 1: home to Poole (20 miles) for the 0830 ferry to Cherbourg, then onward 45 miles to Ste Mere Eglise (with the famous parachutist on the church tower).
Day 2: The excellent...
If you are running bar-end shifters then full size V's and Tektro V levers is a good way to go.
There is a hidden nightmare in all this with Shimano's change in road lever cable pull in recent years to NSSLR, this may be why you don't get much from the Dia-Compes. Have you tried the Tektro...
My father in law worked exactly like that in a bike factory somewhere in West London in the mid 1950s.
My first almost decent bike was a Halfords Olympic, bought secondhand on the Caledonian Road in 1984. It was gas pipe of course.