After a long search, we reckon we've found a pretty good messenger bag. Lots of pockets and compartments, and it's big enough to hold most laptops. 

• 100% Harris Tweed outer
  
• Fully lined in 100% polyester
• Leather and steel fittings
• Fully adjustable strap
• 2 main zipped compartments, one front zipped compartment, 1 back pocket, 1 interior zipped pocket

11 inch H x 15.75 inch W x3.5 inch D
28cm H x 40 cm W x 16 cm D

Colour - Rust-59