Re: Islamic wedding
I wouldn't say we copy other people's traditions. Culture and tradition aren't static, they evolve and everyone from the Indian subcontinent shares similar traditions that were adopted from each other. Muslims adopted customs such as wearing red at the wedding. Just as Arabs in the middle east, muslim or christian, wear white.
But whereas Hindu's, have to wear red (I believe), muslim's don't, so this is changing in our own culture in Pakistan.
As long as one isn't doing something against Islam or out of superstitious beliefs (such to bring good luck or avoid bad luck), then there is no real problem.
I'm surprised that your marriage wasn't already registered. It's very advisable to get that done so that you are recognised as a married couple by UK law.