I have been reading the TFL website to see which tube lines I can take a
bicycle on.

I can fully understand the sections that you CANNOT use but one seems odd to
me.

You can travel with a bicycle from Edgware to Colindale and Hendon Central
to Golders Green.

Why can't I travel all the way through? Ok it is a tunnelled section but
their are NO stations in between.

Any clues??