JFK-LHR Redeye Sleeper/Quiet Service on Business?

Hi all,

I normally take the 11pm flight from JFK to LHR on British Airways because of their "sleeper service" (or whatever they call it now, if it still has a name) in business class. This basically means they keep the cabin dark for as much of the flight as possible (people can turn on their personal light to eat if they'd like dinner or breakfast service), and don't do intercom announcements other than at take off and right before landing. It's great for sleep.

Now I'm a Delta miles member and the last time I took a redeye JFK-LHR Delta flight was a few years ago. They turned the light on through the dinner service and breakfast service, made unnecessary announcements (I can't remember about what but I think they did a duty free announcement and other totally unnecessary noise), and other similar things that were intensely annoying and cut my sleep short for no good reason. I landed at LHR for my meetings exhausted and swore I'd never fly that Delta flight again.

Do you know if that's how they still run the Delta redeye flights from NYC to LHR?

Thank you!