Depends on the landlord.
What London landlord is that? Unless you are in a bedsit or a flatshare, which the family of three here would not be apart of...
Which ramp are you referring to? Is this the built-in one that slides from under the bus? I ride on one of the new buses in London and I noticed that there is a pillar right in the middle of the bus, next to the wheelchair sections, making it difficult for an electric wheelchair to go around. My wife definitely have to try getting in the bus and manouvering between the pillar. It's not impossible, but I think it's very difficult.
Yeah, that is the ramp I am talking about, the side middle one. You are right the pillar is there (it happens to be the one with the wheelchair assist button on it) and I do agree it is kind of oddly placed though it does seem to secure most params in the area, which is why I suspect they did it.
Your wife is on an electric scooter? My friend with MD is on one (when he isn't in his newer compact 4 MPH one, which is much more "chair" like) and I could see that Pillar being a pain. It would be worth the try and I am would think after a few times your wife would whip that thing right in there. I haven't ever measured the space there, though I can see someone nosing in there and the having to back out.
Did you get measurements? I assume you did, but if not, I can always look like a big dumb American and measure up the space.