I just tried PE on VS SYD-HKG in January and have posted my comments in FT (see below).
With the high prices you better off flying discount Js to London. Maybe you can even look at NZ Y+/J if possible. NZ J is fantastic (so is SQ J but SQ is never cheap).
Given my experience mentioned below on VS (which I was very much so surprised), I would stay away from VS if possible.
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VS SYD-HKG Premium Economy - FlyerTalk Forums
"Well I have finally tried for the first time Virgin Atlantic SYD-HKG on PE. Here are my comments:
Checkin: Relatively QUICK as we have dedicated PE line but then we were a bit late and Economy line was quite short anyway.
Seats: GOOD size with good leg room. I managed to get my legs straightened during the flight which was great. For points redemption I think it is great value.
Service: POOR. This is probably the worst service I have had for a non-LCC airline for a long time. FAs seemed disinterested whatsoever in term of service. When I tried to get water by pressing the call button, the FA came and took my cup. Then forgot about it completely. I waited 15 minutes before pressing call button again to get my water. This happened TWICE to me on the same flight, and both times it was not busy time either (ie serving meals etc).
Also, they had the WORST EVER Chinese (Cantonese) instruction reader ever. After reading instruction in English, their attempt to interpret in Chinese was so poor (pauses of like 15 seconds when they could not figure out the right word) I wondered if they know Chinese at all (even though most FAs are Chinese).
FOOD: POOR. Normally I eat all if not most of the food provided. My wife's vegetarian food look so disgusting it was not funny. She hardly ate any food on board. My chicken thigh dish was better but still did not finish all the food, and was not impressed by their supposedly "fine dining" in their ads
IFE: OK, but dated. Several times they had to restart the system because it hunged or have "segmentation fault". Also it took some time to figure out how to use the system itself. I didn't say bad because I know a lot of airlines don't even have IFEs at all.
Other points: when we were in PE, there was a family of 8 with 2 kids and 2 Fillipino helpers. The 2 kids were crying, and blocking the aisle most of the time. I could not sleep properly. The parents and helpers did not do anything to get them to sit down quietly. It really is a shame because in a way they ruined the experience for everyone else. Luckily it was not a night flight.
In conclusion, I think Virgin is falling behind against CX and QF (on Y) on services for SYD-HKG route. Whilst I can accept older IFE systems, their services and food is much to be desired. I can get better service on CX/QF Y than VS PE, and that says something, given that I tried to avoid QF at all costs these days. The plus is the Premium Economy seating which is spacious at relatively few miles to redeem, and that VS is cheaper for flight redemptions compared with CX and QF. But they need to get some decent FAs to change their attitudes very quickly, and I hope it is not the "new VS culture".
I came back to Sydney on SQ J and it was great (admittedly it was J rather than PE). "