David in aftersales has done a great job in putting my mind at rest as well as sorting out a great deal for me after a discussion with Lexus GB.
I'm back in a couple of weeks to get things done but all I can say is thanks to David!
P.S. Also handed a flyer out to a guy in a tidy black IS200 with high spoiler who could have saved double the membership fee in one service alone! From the sounds of it I think he might join gold - let's see if these flyers work for me!