not sure what bit you think Ian is fibbing about but I must confess the reference to lunching the "lovely muu" overlooking the River Thames is in fact correct. "Lovely muu" (I think that has a nice ring to it) is flattered despite realising what an incorrigible rascal old Brom is!
As I imagine you know, I just like giving Ian a rough time whenever possible!
Since you are going to be seeing Ian in person please take notes for me. In the past he's mentioned that he's filthy rich, six foot five inches tall, devilishly handsome, drives an exotic car and is in good condition as an ex marine.
I don't expect you to bust Ian's personna he has so painstakingly created on "thisisms" but when you return from meeting him could you PM me and confirm that lunch with Ian was dutch treat, he's 5 foot 5 inches tall, somewhat homely, drives a rusty Escort station wagon with no exhaust sytsem and that he wears thick, black framed glasses held together with masking tape.
Don't worry, I'll never let him know that you've told me!