£120k is the minimum. Travel, daily goods, luxury goods all help. Ideally on a Plat (though not required) which have held for more than a year, no missed payments, and evidence of earning more than £300k p.a. (though I expect also an increase on that too). Working off old figures, but I doubt they've reduced. This is for UK personal Cent only.

There are always exceptions at Amex discretion, but don't expect anything if you don't at least meet the above. If you do, then call your Plat service team and enquire about the card. They'll probably just "note it on the file" and maybe you hear back.