Amazon has brought back its offer to promote the Photos app. I wasn’t eligible last time and it seems to have changed now, so you should also have a look.
You can view the offer on this page, and there should be a message if you are ineligible. You must be a paying Amazon Prime member to be eligible.
To participate, you need to download the Amazon Photos app and upload at least one photo via the app by August 31. You will receive your £7 Amazon credit within 7 days, and have until September 15 to redeem it.
There is a minimum purchase value of £25 to use the credit, and like always it only applies to items sold by Amazon.