This year we had the opportunity to attend Bespoked at the Lee Valley Velodrome. One of the exhibitors that we met there were the guys from Grim. [We have featured their bespoke track frame on the blog here.] Before they made frames however, they made messenger bags, and from my experience quite a good one.
grim bags
GRIM BAGS SALE

Grim Bags is doing a start of summer sale! For more info click here!