How to apply for three types of marriage immigrant visas in the UK?

If you are married to a British citizen, or your spouse has permanent residency (for example, holding a permanent residence or residence certificate), you should apply for a residence visa. This visa is usually valid for two years. After that, you should apply for an extension of your visa to the Ministry of Internal Affairs. If you have been married for more than four years, you don't need to go through the trial marriage period in Britain. If this is the case, please make it clear in your application materials. If you have completed the marriage formalities in China and wish to hold another wedding after you arrive in the UK, you need to obtain the "Approval Certificate" (the relevant certificate of approval of marriage by the Civil Affairs Bureau).