Don't know how you figure that - the map clearly shows Silverlink Metro
going to Watford Junction. The Bakerloo still stops at Harrow & Wealdstone.

I'm guessing they included Silverlink as it indicates the new interchange
opportunity at Watford Junction. Also it does provide a 'metro' service to
Headstone Lane & Hatch End which are both within Greater London.

It only shows the Bakerloos going as far as Harrow & Wealdstone!
Headstone Lane & Hatch End would have to have a 10 minute service all day every
day to be deemed a proper 'metro' service.

Burkey