Martina signed the charter for action which commits signatories
to challenge discrimination in sport.
She joins over 1300 individuals, 15 national governing bodies
and lots of individual clubs who have signed the charter.
Speaking at No10 reception last week Prime Minister David Cameron
said: "I think it's great that here in No 10 we have got
representatives of the governing bodies of almost every single
sport you can think of, signing the charter saying it's time to put
an end to homophobia.
"There are a huge number of sports personalities who have not felt
able to come out. We should be doing far more to make them
comfortable to do that.
"Young people look to role models, and until we have enough
positive role models, it won't change."
Home Secretary, Theresa May, added: "There is no room for hate of
any kind, anywhere in sport.
"Sport should be about what you can do, not who you are. I want
to see anybody and everybody who loves sport sign the Charter for
Action and commit to kicking homophobia and transphobia out of
sport for good."
To support the campaign and sign up to the charter for action
'like' the 'I love sport, but I hate homophobia and transphobia'
Facebook page http://www.facebook.com/lgbtsportcharter.