You can do that an assume they will find out. But there is a residual risk that they refuse because you couldn't demonstrate that you are married to a British citizen. She can get a replacement certificate for £250: https://www.gov.uk/get-replacement-citizenship-certificate To proof that I am marri...

I hv got ILR September 2019 based on 10 years legal residents rote . My wife is a nutaralised British citizen . Now I wanted to apply for my citizenship and on the application it’s asking about my wife’s citizenship certificate reference number and it’s asking for date Of citizenship certificate . M...