I forgot to mention, if you buy steel racks it's easier to get them welded back together if they break during a ride, a good aluminium welder is much more difficult to find. You can pretty much drop into any high street or village car repair or MOT centre and they are guaranteed to have a welding unit somewhere in the building. I also know for a fact there are a lot of hobbyists who have them in the garage of their home, hardly used. A knock on someones door will soon lead you to a tinkerer down their street who can weld two pieces of metal back together for you to limp home with.
Failing that you can get a nut and bolt drilled in there somewhere with some scrap steel to act as a brace.
Failing that you can get a nut and bolt drilled in there somewhere with some scrap steel to act as a brace.