Usually, eBay offers discounts for items from select sellers only. Today eBay UK is casting a wider net 10% off anything you buy. The promo will run until later today at 20:00 local time.
You are limited to two redemptions, but you could use the discount code PICKANY even if you have items from multiple sellers in your cart. You need to spend at least 20 and can get up to 50 in discounts.
There are some other conditions, e.g. you need to be a registered eBay UK user, pay with PayPal, credit or debit card and a few others. The most important detail is that you cant stack the 10% off with other discounts. Read terms and conditions for more.
Here are a few items you could grab (prices after discount):
open box iPhone 7 (32GB), unlcoked from 450
refurbished Galaxy Note8 (64GB), unlocked from 540
refurbihsed Galaxy S9+ (128GB), unlocked from 510
refurbished Galaxy S8+ (64GB), unlocked from 360
refurbished Huawei P9 (32GB), unlocked from 126
refurbished Xperia Z5 (32GB), unlocked from 117