Why is this important?
If you are a transsexual person, you can apply for a certificate called a gender recognition certificate. This will allow you to be legally recognized in your acquired gender.
In order to qualify for a gender recognition certificate, you must meet certain conditions. You need to complete an application form, provide medical evidence, and evidence that you have lived in your acquired gender for at least two years. There is also a fee, although this may be waived or reduced in some circumstances.
Once you have a gender recognition certificate, you can get a new birth certificate reflecting your acquired gender. Someone looking at this will not be able to tell that you have legally acquired a different gender.
You are allowed to marry someone of the opposite sex in your acquired gender or to form a civil partnership with someone of the same sex. If you are already married when you apply for a gender recognition certificate, you'll have to end the marriage as it's against the law to be married to someone of the same sex. If you want to keep a legal relationship with your partner, you could then register a civil partnership instead, which provides same-sex couples with the same rights as married couples.
There are many implications of getting a gender recognition certificate and there are many things you should consider before taking this step.
You can find more information about gender recognition on the Ministry of Justice website at www.justice.gov.uk.
You can find an application form for a gender recognition certificate on the Directgov website at www.direct.gov.uk.