If your take on retro design is something a little older than the latter part of the 20th century, you might appreciate the Sanderson's William Morris wallpaper designs at John Lewis.
Sanderson (which is currently hosting an exhibition of its work) has reprinted some classic William Morris designs from the arts and crafts era, specifically from the late 19th century, offering a number of designs inspired by nature. But most importantly, designs that are still eye-catching and interesting today.
The William Morris Fruit pattern above is just one example and like all in the range, is made to order and comes in a width of 52cm and a length of 10.5m. Each roll retails for £45.