I recently alighted at Clapham Junction (I don't recall the platform) from a Southern service from Victoria. As we arrived there were "mind the gap" warnings so when the doors opened I looked for the gap but didn't see one so stepped off. Only then did I realise that the gap was an unusually large vertical one. I landed heavily but luckily without injury.
This was the first and only time I've heard "mind the gap" refer to a vertical displacement rather than a horizontal one, and I'm amazed that there isn't a standard for the height of a platform and the height of the carriage floor.
Platform 15 also had a huge (and varying) step/gap before it was re-built recently to raise the level and reduce the issue. Platform 17 could be similarly treated.
Much of Platform 12 still has a very old brick-lined edge that often has weeds growing between the bricks, and also is low. It is bad enough with a 377, but with a 442 it is absolutely horrible.
Yes platform 17 is a bad one but I've always found the gap at Wandsworth Town between the train and platform ridiculous.
I find that the vertical gap at Kew Bridge to be almost dangerous and some elderly passengers find the step very difficult and have to be helped.
I can see how gaps caused by curved platforms might be difficult/impossible to remedy but there should be no excuse for excessive vertical gaps. I know this route takes quite a bit of fright but the train clearance heights can't be that different? Can they?
Wandsworth Town has had the height of the platforms increased in the last few years.
Nearby Queenstown Road Battersea had a very low platform too, also with a brick-lined edge like Clapham Junction P12 mentioned above, but between February and June the height of the platforms were increased. Chiswick also has a similar edge for parts of both platforms.
South West Trains 450570 on the 2022 London Waterloo to Weybridge by
Hassaan Chaudhry, on Flickr
Kew Bridge is indeed one I've seen moaned about, especially the last 2-3 car lengths of the down platform. In fact the 4-6 and 8-10 car stops have been positioned further than necessary to avoid stopping in the lowest bit as far as possible.
Last year Norbiton had its platform height increased, and much of the platform is also on a curve.
At Selhurst the slow line platforms as well as the Down Fast had their height increased in 2013 or so, but the Up Fast platform remains low. It also has quite a dip right on the edge at one point
. I'd love to board or alight from a train there :P.
Away from third rail land, Southall and Ealing Broadway's platforms are low. Bad enough on the straight platforms at Ealing Broadway, and the main line platforms at Southall. But P4 (Up Relief) at Southall is low, combined with a curve with the track canted away from the platform. Always see people struggling to board there. Just as well the 360s here have a larger step board than other Desiros with 20m length coaches.