After almost a week of trouble-free usage my (donated by an associate) Karrimor 'Iberian' (I think) pannier narrowly escaped being squashed into Morrison Street when it fell off just as I was turning round the corner from Semple St.
It was caused by the exposed plastic bit at the bottom being eaten by the spokes, ripping the plastic bit (see fig 2), removing one of the remaining plastic-bit-retaining rivets (one was already missing) and breaking both the top rail clips (see fig 1). The elasticated underhook survived unharmed, as did my rear dérailleur cable, all my spokes and the rack.
I've enough bits of Velcro cable tie and shoelaces to get home and have been told by the internet that replacing the top rail with an Ortlieb QL1 rail and hooks (or possibly Altura Klick) gets around the absence of Karrimor spares and shall pop to a shop in a moment to see if there's anything immediately available. Has anyone any experience of the two named potential replacement systems? Apart from inside old bags, where can I find something equivalent to the stiff plastic stuff to replace the bottom panel thing?