Christians are praying outside Parliament as the House of Lords debates plans to legalise gay marriage.
On Monday, campaigners formed a 'human wedding cake' with a real couple dressed in wedding attire standing on top.
The campaigners have been joined by a worship band in singing Christian hymns and songs.
They want the traditional definition of marriage as a union between a man and a woman to remain the legal definition of marriage.
Hear from some of the protesters here:
The prayer protest was also held outside Parliament when the legislation was being debated in the House of Commons.
Hear Rico Tice, Associate Minister of All Souls Langham Place, explain to organisers why he cannot support gay marriage: