Protesters chanted "bring back our girls" as they took part in a march to Downing Street to demonstrate against the kidnap of more than 200 schoolgirls in Nigeria by Islamists Boko Haram.
Around 80 demonstrators, many waving signs and placards, took part in the rally, which began outside the Nigeria High Commission in Westminster and ended with a petition being handed in that called for the government to do more to defeat the terror group.
March organiser Amour Owolabi said people had travelled from Birmingham and Manchester to take part.
He said: "We're here today to call the international community to bring back our girls.
"The Nigerian government should have done a lot more in terms of locating these girls and informing people about the situation.
"Terrorism isn't a local issue and our government cannot deal with it alone. We need the international community to come and support us in making sure that things like this do not happen again."
Student Rashida Banngura said she was moved to come and support the protest.
"I'm a Muslim myself," she said. "I think some people think all the Muslims are the same but what these terrorists are doing does not reflect my beliefs. They are evil, what they are doing does not reflect Islam."
The Rev Nathaniel Oyinloye also took part in the march.
"These girls were stolen," he said. "The Nigerian government doesn't seem to be doing anything about it.
"If these girls were the children of government ministers then I'm sure they would be doing more."
Foreign Secretary William Hague has urged West African nations to come together to defeat the Islamist terror group.
Attending international talks in Paris to discuss the crisis, Hague said countries in the region needed to set aside their differences to develop a long-term strategy to overcome Boko Haram.
"This is one sickening and terrible incident but they continue almost every day to commit terrorist attacks and atrocities of other kinds, so they have to be defeated in the region," he said.
"That requires a better regional strategy among the African countries, but with our support."
The meeting, hosted by President Francois Hollande, brings together the presidents of Nigeria, Cameroon, Chad, Niger and Benin with representatives from France, the UK, US and the European Union.