A protester holds up a placard that reads "Liberty for all relationships" as he joins a demonstration for equal rights for gay couples in Trafalgar Square on March 24, 2013. Prime Minister David ... more 

A protester holds up a placard that reads "Liberty for all relationships" as he joins a demonstration for equal rights for gay couples in Trafalgar Square on March 24, 2013. Prime Minister David Cameron faces further dissent from within the ranks of his Conservative Party as a bill to legalise gay marriage returns to Parliament Monday less