Connection in LHR Question

[AviationNZ]

I am travelling from SYD to LHR on VS201 in Upper Class in mid Feb, which lands at 4:50am. My connecting flight is on SK502 which leaves from LHR at 9:55am travelling to Copenhagen. Both VS and SK use Terminal 3.

Obviously I will want to use the Virgin Revivals lounge to shower and get ready for my meetings in Denmark, but have a few questions on this...

1. Will I collect my checked bags, and then head through customs to the Revivals lounge?
2. Will I then need to re-check in with SK in the normal fashion at the departures hall?
3. Has anyone used the Virgin Revivals lounge? Where exactly is it?

Thanks.