Many thanks for the replies
We're flying Heathrow (772) - Riyadh (743) - Jakarta on the way out, and Kuala Lumpur (773) - Jeddah (772) - Heathrow on the way back. Certainly going to be an eye opener and an interesting journey
I'm hoping that a bit of sweet talking and flashes of my airside pass will possibly get me an upgrade so fingers crossed
Wouldn't mind trying to get into the lounges at RUH/JED too...