Fly A380,
I would suggest a suit and tie for any interview.
You'll be so nervous you won't have an appetite for lunch!!
I may see you there as I'm also inbound shortly, I've taken someone else's advice on Pprune and have booked into the Jurys Inn Hotel which apparently is only a few minutes walk from The Rivers. This will hopefully save any worries about car parking or taxis. You can book on line at:
www.jurys-heathrow-hotels.com/jurysinn_heathrow and it'll cost you £49 for the night.
MD
