In which case they are not pedestrians.
I knew some clever clogs would say that.
Well they become pedestrians again when they get off the bus ...
I doubt they'd be able to just ban all cyclists from coming in - there's be a forum thread on that somewhere, we're an angry bunch when we get shut out!
It's many years since I cycled through the tunnel, and even longer since I last walked through it. It's mainly taxis and car drivers in the know who use it nowadays.
I'm not sure I'd be brave enough to cycle through, though reportedly most drivers are considerate, and bikes are encouraged to use the middle of the road to dissuade them from overtaking:
