I have dug out some discussion in 2011 of the letters which were then sent changing the T&Cs (of selected cardholders, it seems) to remove the fee reduction for holding certain other Amex cards. I found it in two separate threads:-
From
http://www.flyertalk.com/forum/briti...er-thread.html:-
From
http://www.flyertalk.com/forum/briti...t-sign-up.html:-
Are there any other Platinum credit card holders reading this thread who were moved off the £30 fee onto the £150 fee back in 2011?