Flights out of LHR are heavily taxed.

I asked a long time flight attendant if SHE thought PE was worth the cost. Without a pause, she said no.

I would get an EXTRA SEAT (a middle) between you and your wife. Might make Economy not quite so bad.

I love the business class seats, but don’t eat the food and am not a drinker. Still, I keep buying it on long haul flights.