Best credit card to pay for business class tickets

[Truetoself]

We are a high income family, use our credit cards for everything (but clear it each month) and spend approx £200K a year using our credit card. What is the best card to collect points for upgrade on air travel? We use whatever airline is best for the trip rather than have a preferred airline. Thanks in advance!

American Express - Avios points.
I regularly fly to Turkey with British Airways for £1. I don’t bother with an upgrade though. But then I’m a widow and not in the super tax bracket.

which American Express card do you have @Nicaveron? I know there are several

Check out HeadForPoints where this is discussed in depth. Generally, it's best have paid cards from BA and Virgin if you use them at all, and fill in with Amex. The Platinum card gives a lot of other benefits for frequent travellers.

I have a BA American Express card. I use it for most purchases and built up my Avios points. I have found it extremely useful.

Thanks both

Another recommending Headforpoints. It is so helpful in accruing and using avios.

Barclaycard avios points earning. Spend 3k in 2 months (I think) for 25000 avios points. Yearly spend reward, upgrade option. If you earn a lot you can also apply for a special premium Barclays bank account which gives more avios points