Jeremy Collins ) gurgled happily, sounding
much like they were saying :

Would you like to hazard a guess as to what the (M) stands for?

I know perfectly well what the M stands for. I think you misunderstood
my post.

Forgive me. I naively assumed that you asking "Is that legal" in response
to a comment about cycling on the A40(M), then going on to say you didn't
fancy cycling on the A1(M) was along the general lines of you asking if it
was legal to cycle on Motorway-classified roads.