UC Out - PE Return - Use of revivals Lounge?

Hi.
I love this site, it's so useful
I fly BOS - LHR quite often (once every couple of months) and have recently switched to Virgin. Love the airline and have experienced PE and UC so far.
I'm flying back at Christmas and want an UC flight out, for sleeping, and PE back as I don't need the extra when flying during the day. If I fly BOS - LHR on an UC ticket one way, can I use the revivals lounge? I'd like to hope so!
Ideally the ticket type I'm looking at is UC (Lowest) on their site as I know my dates and don't need flexibility.
Anyone's views and feedback would be much appreciated.
JC.
I love this site, it's so useful

I fly BOS - LHR quite often (once every couple of months) and have recently switched to Virgin. Love the airline and have experienced PE and UC so far.
I'm flying back at Christmas and want an UC flight out, for sleeping, and PE back as I don't need the extra when flying during the day. If I fly BOS - LHR on an UC ticket one way, can I use the revivals lounge? I'd like to hope so!
Ideally the ticket type I'm looking at is UC (Lowest) on their site as I know my dates and don't need flexibility.
Anyone's views and feedback would be much appreciated.
JC.