A giant toilet has been erected on the steps of St Paul's cathedral.
It's to mark World Toilet Day.
Tearfund's Toilet Twinning initiative planned the "Big Squat" event at 1pm noon today which saw Bill Oddie OBE perform his "Toilet Song" to passers-by and tourists in the capital.
Pedestrians at St Pauls were also treated to MumSing Choir who sang "Lean on me" and "You've got a friend" on the steps of the Cathedral.
Toilet Twinning raise funds to provide proper toilets, clean water and hygiene training in some of the world's poorest communities.
Speaking at the event, Bill Oddie told Premier that toilets were no laughing matter. He said: "There's nothing funny about it, in fact there's something very harmful. If a community doesn't have working toilets and fresh water, they have a big problem."
Christians are being urged to twin their lavatory with one in the developing world.
Toilet Twinning CEO Lorraine Kingsley told Premier: "2.3 billion people across this planet don't have a loo, and that particularly affects women and girls."
"Let's realise we are so fortunate to have a loo, we don't think of it as a luxury item in this country but in so many places in this world it is a luxury item."
"People don't have one [a loo], and when they don't have one, they're sick, and not able to get out of poverty."
For Lorraine, it's a matter of justice.
She said: "When we know that we have the resources to do something about it, we want to be generous with our resources and with our time and just say 'Lord, use us in any way you will so we can be fruitful for you'."
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