I sent an email to Maria Mazer, IIE Program Manager for Europe/Eurasia, to see if I could confirm my transcripts had been received, and she replied:
"Due to the number of transcripts we are processing at the moment, we are not able to provide individual confirmation. If we do not received your transcript, we will be in touch and ask you to re-submit. In this case, no news is good news. "
So if we haven't heard anything, that probably means they've been received.
Also, I asked her when UK notifications would be sent out, and she replied:
"I can’t say exactly when decisions will be announced because the Fulbright Commission in the UK is currently working on their final decisions. IIE makes most announcements in March and April."
Last year most notifications came out on 3/19, so given this year's early recommendation notification (1/16), I'm hoping final notifications will be sent out in the next 2 weeks!