Dave Newt wrote:

Agreed. Totally. Some of them aren't so bad. But then remember that
orientation-information is much better in Paris generally.

Agreed. I think that navigation around the system is rather easier in
Paris than in London because stations there tend to be named with more
precision than they are here. For example, Richelieu Drouot is at the
junction of rue de Richelieu and rue Drouot; Reuilly Diderot is at the
junction of Boulevard Diderot and rue de Reuilly. In London, Tube
stations are usually named after localities, e.g. Stratford, which can
encompass quite a wide area.

--
John Ray