Mehdi Kazemi and Pegah Emambakhsh are gay Iranians. Their respective partners were arrested by the Iranian authorities. Mehdi’s partner was executed, Pegah’s is under sentence of death by stoning (she would have faced 100 lashes but they give up on third offenders).
There is a petition for Pegah and another more general petition at the UK government’s e-petition site calling for a cessation in the deportation of gays and lesbians from countries where they may come to harm because of their sexuality. You can also contact your MP at http://www.writetothem.com.