This is a bag which I use almost every day, bought from
Fez. It looks like an old-style school satchel, but in fact it closes by magnetic snaps. One can be seen behind the left buckle in the final photo.
I was carrying the bag on the bus one day, and another passenger said to me, "That looks like a Daisy Did bag!". A quick search led me to What Daisy DidWayback, a page on the EthicalShop site advertising leather bags made from recycled materials by Daisy and Ozric, founders and partners of What Daisy Did. There are pictures of some colourful Daisy Did satchels in a 24th March 2016 post on Erica Louise's Recycled Fashion blog, "What Daisy Did: Ethically Made Satchels and Fashion Accessories"Wayback.