From web sites
Faresaver
Folding bicycles, which are safely and securely stowed in the designated luggage area in a suitable bag or box, are generally permitted onto our buses if the driver believes that there is sufficient luggage space available. Fixed-frame bicycles are generally not carried on our buses however.
First
Folding bicycles are welcome on board our buses, however we do ask that you fold them and place them in an appropriate space. For everyone?s comfort and safely, we ask you to make sure they?re not blocking the aisles or access to any seats.
However there are instances when it may not be possible to accept folding bikes, for example:
* If there isn?t enough space on the bus
* When your folding bicycle could make the inside of the bus or its seats dirty, or could cause discomfort to other customers
Due to space and safety considerations, standard non-folding bicycles cannot be carried on our buses.
Stagecoach
In some areas, you can take your bike on the bus. Please contact the local team in your area and they'll be happy to advise. However, if your bike folds up, can be stored in a suitable bag or box, can fit within the luggage pen on the bus, and you can lift it in and out yourself, it can be brought on at the driver's discretion.
A heated conversation elsewhere has suggested that
electric assisted bikes are not allowed on buses - something to do with the batteries not being carried has been suggested. But as I read it, the restrictions are to do with folding (or not) bikes and not whether they have a battery fitted - indeed, on Faresaver's rules of bag or box, if there's a battery restriction the driver would need to look in the bag to establish whether a particular cycle could be carried.
It strikes me that if you're not going to allow batteries to be carried on buses you're going to rule out pretty much all modern electronics ...
I will admit to a personal interest as I now ride a foldable electric cycle; no problem (outside lockdowns) taking it on the train - not tried it on the bus, though.