Amex offer
Amex is offering a welcome bonus on the Rewards Credit Card (no annual fee) via referral links.
Offer details (via referral):
• 10,000 Membership Rewards points after spending £2,000 in the first 3 months.
• 1 Membership Rewards point per £1 spent on everyday purchases.
• No annual fee.
My referral link (helps me earn a small referral bonus too — thanks if you use it!):
https://americanexpress.com/en-gb/referral/rewards-credit?ref=iBRAHNsqQL&XL=MIANS
Key eligibility notes:
• You must be a new cardmember (haven’t had a personal Amex card in the last 24 months).
• 18+, subject to status and credit check. Minimum income requirements apply.
• Terms apply — always read them on the application page.
Membership Rewards points are flexible and can be redeemed for gift cards, travel (including transferring to airline/hotel partners in some cases), or statement credit. Great entry-level Amex card for beginners.
If you’re already an Amex customer or have had a card recently, the bonus may not apply — check your eligibility first. 
Non-referral link (standard offer may be lower):
https://www.americanexpress.com/en-gb/credit-cards/rewards-credit-card/