EU Commissioners will meet later to sign off plans for tackling the European immigration problem.
They include quotas to help distribute migrants across the European Union.
Francine Uenuma from Save The Children says something needs to be done to spread immigration more evenly.
While the British Home Secretary has said some migrants intercepted at sea should be sent back to their country of origin.
Theresa May's comments, made in The Times newspaper, come as EU President Jean-Claude Juncker prepares to unveil proposals to share refugees coming to Europe across all member states.
Mrs May argues that a quota would only encourage people to come - putting them at the mercy of "evil" people traffickers.
She wrote in The Times: "I disagree with the suggestion by the EU's high representative Federica Mogherini that 'no migrants' intercepted at sea should be 'sent back against their will'".
"Such an approach would only act as an increased pull factor across the Mediterranean - and encourage more people to put their lives at risk."
"We must - and will - resist calls for the mandatory relocation or resettlement of migrants across Europe."
Migration statistics released on Tuesday showed that the number of asylum seekers to some European countries, like Italy, had more than doubled in the past year.
Hundreds of migrants have died while trying to cross the Mediterranean Sea.
The EU executive Commission is due to set out proposals to deal with the crisis later.
Ireland not automatically required to take part
The Commission wants to introduce refugee quotas for all EU countries, so that the number of asylum seekers would be shared more equally across the EU.
A country's quota would be determined by key factors, including their GDP, population size, unemployment rate and history of accepting asylum seekers.
For it to become law though, it must be agreed by a majority of 28 member states - and while many such as Germany, Italy and Malta support the proposal, others including Britain, Hungary, Estonia, Slovakia and the Czech Republic are against it.
The EU also revealed on Tuesday that Britain will only be subject to the quotas if it chooses to 'opt in' to the proposals.
Ireland and Denmark are also not automatically required to take part.
In the French port of Calais, just 20 miles from the UK, the authorities are struggling to contain more than 2,000 migrants from crossing the Channel.
Dozens of French riot police have been manning the roads around the Channel Tunnel terminal as many migrants no longer wait for the cover of darkness to hop aboard unsuspecting UK bound lorries.
There is huge frustration among the migrants who claim the authorities have become increasingly robust.
One young man from Sudan said he was beaten by the police earlier in the day. He said he was hit across the hands and legs by a police baton. One of his fingers was clearly very swollen and bleeding.
The migrant's new main camp, on the outskirts of Calais, is home to around 1,500 people. Hundreds of others are in several smaller camps dotted around the port.
Each evening, most make their way to the only guaranteed food source, a soup kitchen run by local charities. For many it is their only meal of the day.
The charities have criticised the authorities on both sides of the Channel for not doing enough to help those arriving in Calais.
Calais' Mayor has accused Britain of failing to help French authorities as they struggle with the new influx. They claim the crisis in the port is worse now than at any time in the past decade.
