Hi Kev,
Thanks so much for your reply. Yes, I did assign the new address format to UK. This is the first time I'm trying out the UK Template.
I know the invoice display formatting uses this because I've done it with zencart 1.2.7d (without UK Template installation) and it works.
Other contributions installed on the one I'm working on that is different to 1.2.7d is the new betterCategories, column layout, cross-sell and some of my own customisations to the layout of the site and I haven't done anything involving the address format - at least I don't think so anyway!
I've done a clean install for 1.3.6 without the UK Template contribution and inserted a new address format and it does work.
I'm baffled. I've tried changing different address formats for UK on the one I'm working on and it has no effect whatsoever.
Kev, does the address format for UK overide the ones for England, Scotland, etc.? I'm not expecting it to if all you've done is to add these to the countries list.
When I get some time (next month) I'll do a clean install with the UK Template contribution and try again. I'll keep you updated.
I can modify bits of code here and there but I'm no expert.
Thanks very much!