Hard to tell exactly. I think you'd need to jack it up and wheel off to be sure. The end of the spring never does quite reach that kink on the lower seat, but something has caused the rubber to wrinkle up.
If you take the handbrake off, does the warning light stay on, but yellow?
Pretty sure that's an abs sensor failed, and chances are it'll be the front right one, but a code reader will confirm it.
It is possible that the end of the spring has snapped off and has either lodged lower down, or damaged the abs sensor wire on it's way by.
Definitely get it checked out pronto, as your flexi brake line is in the same place!
I'm trying to remember how close [ref]Zedebee[/ref] is to you as he may be able to code read it and has enough knowledge to spot the problem.
PS. Glad to see your Mum's inate mechanical sympathy kept it down to a modest 80mph with all those lights on!!! :roll: