Jinky
I will pop into screwfix tomorrow and check there new catalouge to see if they do any wider, or you can check out for safty signs the type you put onto the back of lorry's I think your after.
Your dead right on ladder maintainance, but before I go out and buy new rubber feet, I use the other three sets on the ladder first, there all the same size and I have all mine bolted in, I check all bolts and conditions on a regular basis and can average an extra year or two out of a set, Its not being mean with money, but with the regular maintainance they do last longer.
