I cross-posted about this subject onto a British politics blog I post on
For any lawyers/legal experts on the site, I see in American politics a lot on the American right are making a big deal about Christopher Steele not turning up to court in London for a deposition.

To my knowledge depositions aren't a thing in this country, although it might just be a different word, and I can't see any British media reporting anything about this. Is it fake news or something else?
Got the following response from somebody there
I was once deposed in London for a case in Boston. I was under no legal obligation to turn up and be deposed for a whole day, but did do anyway.
So its possible that there was a deposition request from an American court but likely wasn't a requirement to attend.

Learn something every day, I didn't know this was a thing and hadn't heard of the phrase Letters Rogatory before today.