Seriously, American express and British Airways are misleading people by over promising and under delivering. Those all rosy free fight for companion voucher is a lie and no one should fall in their trap.
You will never get the chance to use your companion voucher when you want. Amex being regulated company should be investigated for this misleading card holder with all benefits for selling their credit cards. Airlines has no dignity so don't have any nice word to say..

All personnel looking to get AMEX card, please do not fall into trap and get some other alternative. I am someone holding AMEX card for more than 7 years and now looking to cancel it.
Companion voucher is not what they say in their marketing paper, it is useless
There are plenty of suppler who don't accept AMEX at all.