Halal food provided to nineteen other schools and nurseries in Westminster is being tested for traces of pork.
It comes after the council revealed that Halal chicken sausages at one school contained pig DNA but the supplier says they believe it was an isolated incident.
Ria Chatterjee reports.
More top news
Official readings are recorded three metres in the air but a study found levels of nitrogen dioxide (NO2) were higher at pushchair level.
Tubes, trains, trams, buses, cable cars, river buses, taxis and going by foot - your guide to getting around during the strike.
Union officials rejected a revised offer from Underground managers during a meeting at the conciliation service ACAS this afternoon.