Just read your comments and went a checked the sizing of the jelly roll strips that I bought this morning. This is Freedom Fabric which is a British firm. Like yours, the strips are of varying widths. As a beginner, I had assumed that jelly rolls would be ideal for me but now I know that I will have all sorts of problems trying to get accurate blocks. Will try taking this backto the store as I haven't cut anything yet, thanks to your warning. Thank goodness for advice on this site, otherwise I can see that I would have been thinking that I was hopeless at getting things right.