We have a full set of Whitworth sockets and spanners left behind by my Father.Us brothers share them between each other,and one does more work on the Series1,so he has them most of the time.
I have a 1/4 Whitworth spanner in my tool box in the van,still gets used quite often,but the other sizes are rarely used.
They are often able to be picked up at the markets,usually very cheap.I get shifters from the markets as well for the boys.Often they are the good brands.

