I purchased this at Currys/PC World. It is the same price on Amazon.
Other places are around £45.
It is well padded for a compact bag and surprisingly fits a Nikon D810 with 24-70 F2.8 lens.
A compact camera backpack that opens fully to reveal your protected kit
Padded compartment totally dedicated to camera gear, adjustable shoulder straps
Space on the flap for accessories and day essentials.
Suitable for DSLR, lenses and accessories, depending on the size
Front organized pocket for smartphone, wallet, etc