Oh, the T&Cs say applications must be made by 31 May, despite advertising banners still appearing today for this offer:
To qualify to receive a £20 Amazon.co.uk Gift Card you must successfully take out an Ocean Credit Card via the Amazon website link between 1st May 2021 to 31st May 2021 and make a purchase using the card on or before 31st July 2021.
Amazon Gift Cards are subject to Amazon’s own terms and conditions. See amazon.co.uk/gc-legal.
If you qualify for the Amazon Gift Card, it will be sent to the email address provided by you within 21 days of making your first spend on the Ocean Credit Card.
To enter the promotion, you must be 18 years or over and be a resident in the UK.
Limit of one £20 Amazon Gift Card per qualifying customer.
You must let Ocean know if your email address changes.
You agree for Ocean to share your email address with Amazon.co.uk for the purpose of sending your Gift Card electronically.
https://www.oceanfinance.co.uk/about-us ... azon.co.uk
Perhaps check again another time, I've sent an e-mail, maybe they'll update it!