House of Commons approves same - sex marriage . PM David Cameron backs the bill , but many in his party oppose it . He is also under pressure from party members over Britain 's role in Europe . The issue of same-sex marriage has exposed painful divisions within Cameron 's party , with many lawmakers already fractious over his position on Europe . The Church of England is among religious groups opposed to same - sex marriage .
House of Commons approves same - sex marriage . PM David Cameron backs the bill , but many in his party oppose it . He is also under pressure from party members over Britain 's role in Europe . The Church of England is among religious groups opposed to same - sex marriage .