thanks all. so here is the deal:

I already have the BA Amex card (fee paying £150 per annum).
my flying pattern isnt all that. I make a couple of trip to the US every year and always on WTP. I think I maybe flying 3 or 4 times this year. It just would be nice to get the benefits plus the lounge access since i need the peace and comfort to sit and do work rather than in the busy and chaotic "public" areas.

but besides that, makes me feel valued

you are correct. I do currently have 90 tier points. I have 32,500 avios. I did travel in business twice last year but thats because I redeemed my airmiles.