Assalamu alaykum.

A question for those in uk with 2nd wifes or nikahs which have not been registered. how do you go for umrah or hajj with your wife when you dont have the nikah certificate?

Jazakallah

Wassalam

p.s. this is just about how you show that you are married and she is mahram for umrah, nothing to do with the permissibility of 2nd wife.