The Church does not recognize “reassignment” surgery. You are biologically a male and will always be a male. You cannot marry another male.
Out of curiosity and hypothetically speaking, what if someone is born as both male and female and had to pick a gender they most identify with. Are they not able to marry because they knowingly cannot procreate? And have not many couples married even though they completely know they cannot procreate due to various reasons (removal of testes/ovaries/uterus due to cancer at a young age, or intentional sterilization)? I understand that the Church has a sound truth, but we live in a time when there are so many areas that leave people confused. And, in my experience, it is hard to find a spiritual advisor who is willing to lay down God’s Law and not sugar coat it at fear of offending someone.
I live in the uk
You COULD see a priest for marriage and LIE to him about your past and future, and be “technically” approved for Marriage in the Church, but God sees all, and the sacrament can only be valid IF you are approved by disclosing the complete truth.
It is not a matter of secular law, it is a matter of reality and the Church’s teaching. It is not possible for you, a man, to marry another man. It is not possible for you to change reality.
A biologica male attempting to marry another biological male is invalid, whether they are able to deceive the priest into marrying them or not. The proper matter is not present.
Do the research, such a condition is exceedingly rare and would require investigation by the Church with support from a doctor. Also this is a red herring, completely irrelevant to the OP’s post. The OP is a man. The OP has had mutilating surgery to change his appearance to be female. However, he was, is, and always shall be biologically male. He cannot marry another male.
That is not the basis on which they would be refused marriage.
Not relevant in any way.
There is nothing confusing about this-- born a male, he is always a male. He cannot change that fact. He cannot marry another male. He has now gone through mutilation surgery to have a female appearance. If he went through surgery to appear female and wants to marry an actual biological female, then he is suffering the delusion that he is a lesbian-- serious sex confusion would render it impossible to marry on defects of psychic nature.
I doubt it. The baptismal record is required for marriage. The baptimsal record is an official document of the Church. It is not changed.
Neither is marriage, so it’s really a moot point.
so you are saying lying is my best option?
Lying is not an option. You cannot marry in the Church. Please go talk to your pastor who can explain this to you.
Child bearing is not relevant.
The baptismal certificate is required for a marriage to take place in the Catholic Church [for both Catholics and those baptized in another Christian tradition] and a copy is requested during the pre-cana phase … and one assumes that you are a Catholic seeking information on a Catholic ceremony … for non-baptized persons - permissions have to be obtained before they can marry a Catholic in the Church … so there is a disclosure obligation on your part to be honest in seeking the sacraments and I believe with your intended spouse … honestly being the foundation to a happy marriage … and you have no hope of concealing anything from God - He knows all and sees all …
- if you have to lie to obtain it - what value will it bring to you and your spouse? 
the truth is i havent been to church for many years and the question was a hypothetical one really to see what the reaction would be.One question I have is why you would seek a “Catholic” wedding ceremony - when you seem aware that in order to have it - you have to deceive
And if you believe that you are already outside Communion with the Church [you don’t say why - if its life style choice or other… ] from your feeling you cannot receive the Eucharist - why even seek a marriage in the Church?
Lying is NOT an option for a true Marriage. But OP seems to present that she is trying to hide the truth, I was trying to show OP that you can try to get around the rules, but that would be a serious sin and it wouldn’t change the fact that it would be an invalid marriage.