Escalators steps are deeper than ordinary steps with no halfway resting point (or 'landing' as we call them) so it is harder to walk up or down an escalator - not to mention the way the grooves on it make you want to fall forwards all the time because you're having to look at them whilst walking. It's OK for those mutants over 5'6" with legs to match, but if your inside leg measures less than 25" you're stuffed. It's knackering!!

And as for the wooden slatted variety? There are still a couple lurking on the newly PPP (Part Private - Public) owned London Underground, which I daresay will still be there until we have another fire like the Kings Cross disaster 20 years ago.

LTS