For Sale: British Made Mini Messenger Bags

Really want to get the mini messenger as my mission workshop straps got cut off before I ended up in the ambulance. I had the cavernous shed at 35L which was probably a little too much if I'm honest.

Just wondering if anyone regularly fits 13' mac, ipad, spare shoes, trousers and a jumper with maybe the odd bit of shopping at a push in their's (my commute is country - town so can get a bit wet hence jeans)?

Want to support the British made rather than pay the over inflated prices of US made bags, but worry it may just be a little on the small side.

As said, bit of a stretch for the messenger. I use the backpack when I'm carting my laptop (15") around, fits just fine with ipad, clothes, tools, lock, pump etc and a little bit of space for extras.