Ensign Bus operates the X80 hourly Mon-Sat with a vehicle which could carry bikes (and similar to those that do on Snowdon, by Windermere, on IoW, and in New Forest.
27.1 Could make it possible to run X80 for longer hours, and carry cycles - one to explore? Perhaps with free ride option solely across river and for paid fare you get to Greenhithe Station or Chafford Hundred Station. Outside core day times it may be an option to register this as an on-demand service - sort of dial-a-ride.
Any collated figures for demand?
I was aware that for pre-booked pelotons the practice was to top & tail with escort vehicle and ride through as a block
I also have a campaign to get bike carriage on the 108/N108 between N Greenwich and Bromley by Bow, and reinstate the 395 over a shorter route between Limehouse Station and Rotherhithe Station (bus stands/stops) as an on-demand 8-seater minibus with 1 additional stop at Jamaica Road roundabout
Dave H