I dealt with a similar but very different situation recently. It is a block of individual flats with warden assistance living on site. They wanted to store and charge mobility aids in corridor.
They need to store and charge them somewhere, corridor is not best place I agree, but in this particular case it was acceptable.
Obviously corridors are not ideal as they introduce a source of ignition, a fire load and an obstruction.
The solution opted for was.......mark area of corridor that must be kept clear, corridor was wide enough for that. Warden can monitor and make sure tenants comply. Ensure chargers are PAT tested and records kept, again warden to monitor.
If there was a fire elsewhere in the building escape routes are therefore clear. If there was a problem in the corridor because the flats were built to current building regs with adequate compartmentation... they could stay put. Each flat had alternative means of escape direct to outside if required.
I appreciate that this is an entirely different scenario to that described by Big T, and I believe that as we live longer and longer this will be a common problem of the future.
Alternative would be to store and charge scooters within individual dwellings...more of a hazard I would argue for the occupants both as a source of ignition and obstructing means of escape within flat.