I didn't know that the BBC was playing s4 of Cabin Pressure right now.
But if you hurry, there's four (4!) days left to listen to Wokingham. Go listen, do -- it is hilarious!
I tend to follow along with the ep transcript, which also helps if you're dying with laughter, like I was.
What a fabulous ep!
If you have not heard the rest of s4, I think you're completely safe in listening to this ep. Wokingham all made perfect sense to me.
Until now, I had heard all eps from A through S. So everything from s1, s2, and s3, including the first Christmas special [s2 e7].
SPOILERS: For people who've heard both Wokingham and its predecessor, Vaduz, here's some behind-the-scenes commentary from the transcriber, Ariane DeVere. Those eps were recorded for s4 on 16-December-2012.
Make sure to keep an eye on BBC Radio 4, because they'll probably -- fingers crossed! -- play the last two eps of s4 next month. I suspect that you'll need to have heard the rest, however: Timbuktu, Uskerty, and Vaduz.
All the Cabin Pressure transcripts are online, so if you can't listen, you can always read them. Do note that reading them first sometimes spoils listening... although I actually read several transcripts from s1 before I got to hear any recordings.