This is a Trip Report from the Upper Class cabin
Ground Staff
Food & Drink
Entertainment
Seat
Cabin Crew
Arrived at BOS about 2 1/2 hours before my flight, IMHO way too early for the lounge as BOS. It's nice to have as the gates are very close to secutity and the area can get very busy as BA, Iceland Air all have flights that leave around the same time.
Was also checked in very quickly via the UC check-in. I didn't do OLCI, forgot for some reason, was informed of a 30min delay

As I was in the elevator down to the lounge a smile appeared on my face. I remembered the lounge gets very busy and getting a nice seat has been an issue in the past. Walking in was greeted in a very pleasant manner. Sat down set myself up with laptop, power, red wine and rather good piece of chocolate cake. After a few more glasses I remember how long a few hours could be in an airport and how busy the lounge now was.
Was finally called at 7:30ish. Boarding was very busy, indeed. All the classes were boarding at the same time and had just started, trying to make some time up I expect.
Once on and settled I notice that UC is very full. I can only spy 3 empty seats. As we sat waiting drinking (another) glass of red the captain came over the PA.
"Sorry for the delay, I don't want to blame BA but I will....." Seems a VS aircraft waiting for BA connecting pax as a BA flight was cancelled. I call that a VS issue for waiting!!!!
Normal UC service was on show, very busy and food ordered. No Welcome back at all on this flight, I get it more now in PE than UC!!
Started to watch a movie whilst I had dinner, the real plus point of the flight. I have braised meat dish. I was out of this world, possibly the best meal I have had on a flight - Ever!!
Food eaten, bed made flat, I sleep. Got woken up by CC as we are coming in to land and I would I like breakfast as I had asked for some, that will teach me

Landing was very quick for LHR at 8am and we landed only 30 mins after our scheduled time.
I had some concerns about Security as the Olympics are on top of us. People in Olympic uniforms all over the place, special lanes here, special lanes there. All I can say it must be working, walked straight thru immigration. very nice.
Good to see priority baggage in effect, bags collect I was off to the car.
Overall all shipshape and above board. What you expect an UC journey to be. A happy flyer.