Glad you've found an alternative you're happy with.
I think jeans do look out of place at most weddings in the UK, and have only really seen surly-looking teens wearing them, usually as a protest or because they have no other options.
DH is Aussie, and was invited to one of my friend's weddings in the UK - he was just going to wear jeans and a casual shirt, to which I said "ok, if that's what you want to do" (we weren't married then) - but luckily some tennis friends of his were utterly horrified at his plan and told him he HAD to buy a suit. So we did, the day before the wedding (I had to turn up his hems because of the short notice) and he was hugely relieved he had, as he would have been the only one NOT in a suit if he hadn't.
The only weddings he'd worn a suit to previously had been ones where he was a groomsman - otherwise, he'd turned up in a hideous almost-Hawaiian style shirt and long shorts (normal for some Aussie weddings, not all)