[Have a spritely young bald woman in filmy clothes, perching on a scratched wooden desk and beaming at you. Her eyes are bright, bright purple and almost seem to glow slightly, and she is very pale.]

Hullo everybody! I'm Arkady, and I'm from the Island of Whitechapel. Of course, for most of you Whitechapel isn't an island, but we had a little problem with the Thames getting loose from its banks, and ever since then things have been a bit wet in London. Whitechapel has about twice as many people as this place, and we just took on a hundred more. We'll make do, though. We just need to pull together. [It's not clear whether she's speaking of Whitechapel or the Barge. Both maybe?]

I'm to be a Warden here, and if there's a need for help anywhere, do let me know! [She pauses, blinks at the screen, and then leeeeans forward and peers into it as if she can see some of you on the other side. A giggle; the purple eyes blink and she pulls back again.]

I'll be up on Deck in the gardens if anyone wants to say hello! Yay flowers!

[A few seconds later she literally appears a few feet from the Colour Garden, which she immediately crouches down to inspect.] Hello flowers!