Instructions:Download the Amazon Prime Now App on your chosen device.
Find the products you wish to order.
Go through the checkout process but enter the code 'NOWTEN'
It should then take £10 off.
It says its for 'first orders' on the app but I've used the app before (a while ago mind you) and it works for me currently.
I believe 'Prime Now' is only in select locations (I could be wrong!) but always worth checking!