I have to admit defeat after another cyclist pointed out that my bike pump was sliding out of the hole in my left pannier.
I have been using a bog-standard double pannier from some random brand on Amazon.
I'd like a nicer version, probably a single, that I could take into the office with a laptop inside. However, I seem to be finding only 3 types: waterproof trekking things, Cath Kidston, or '21 yr old bearded hipster from North London.'
Any suggestions? Bobbin Bikes has some nice-ish ones but limited, and this one from Carradice has the right feel, with a flap to cover the wheel dirt:
Carradice Bureau Bag