Looking for a replacement leather sleeve for my phone, and found this. A friend had the same case for the iPhone 6 as it looked fairly good, not much drop protection but protects the phone from minor bumps and scratches. It also doesn't have a large seam around the edges which makes other leather cases massive, especially with the Plus-sized iPhones.
Should fit the 6 Plus, 6s Plus, and 7 Plus.
Only the tomato (red) colour is available.
They also have the black iPhone 6/6s version for £12.50. They usually retail for £29 for the Plus case and £25 for the normal case, and have seen them recently in John Lewis for that price.