We have traveled with your books, but now my spouse must use a small portable scooter for walking distances. Are the sidewalks in London and other parts of Europe broken to allow the scooters to cross streets easily. We still buy all your books and would recommend including this info in all you books. Thank you in advance.
This website should help answer your questions:
http://dptac.independent.gov.uk/pubs/travelhints/pdf/travelhints.pdf
Short answer is no. You might find this site helpful http://www.ricksteves.com/graffiti/graffiti5.html
I haven't had too much trouble in London although I'm told the sidewalks are quite tilted in some of the northern part of the city.
Most junctions in central London, where there are pedestrian crossings, have both tactile paving and dropped kerbs. Of course it is of no use to have one side one and the other not; I haven't noticed too much of that in the touristy areas. It is true that in the City (the Square Mile) many pavements (sidewalks) are fairly sharply sloped down towards the kerb and some are quite narrow. Most tourists don't get too far around the City though. Also, Phyllis, from the tone of your question it appears that you may think that RS or RS's staff see messages on this Helpline. That's generally not the case. We're just fellow travelers helping other travelers and unless a message says it comes from staff it is unlikely to be so. Happy planning...
Amsterdam is completely accessible.