He tripped over with the tray.
4 seconds sound clip from the The Remains of the Day movie soundboard.
You can hear this line at 00:27:00 in the Blu-ray version of the movie.
Quote context
[...]
- No, no. I think Mr. Lewis's fortune comes from cosmetics, actually.
- It's old Mr. Stevens! Get a cushion, quickly. A blanket!
- Thank you, sir. I'm sorry. What happened?
- He tripped over with the tray.
- Yes, I saw it, sir, from the window. Terribly sorry. This never happened before, sir.
- Yes, do.
- Yes, he's made a full recovery, I'm happy to say, sir.
[...]