File photograph shows a volunteer carrying a Syrian refugee child off an overcrowded dinghy at a beach after the migrants crossed part of the Aegean Sea from Turkey to the Greek island of Lesbos September 23, 2015. REUTERS/Yannis Behrakis/files

LONDON (Reuters) - Britain might take in refugee children who have been displaced by the war in Syria and have travelled to other countries in Europe, a government minister said on Sunday.

International Development Secretary Justine Greening said the government was considering whether it could do more for the estimated 3,000 children who have fled the conflict without their parents or guardians and are in Europe.

Asked whether the government was close to agreeing to calls from relief groups for Britain to admit the children, Greening told Sky News television: “That’s what we are doing and I think that is the right thing.”

Prime Minister David Cameron has previously said Britain would accept 20,000 refugees over the next five years from camps in the Middle East, as opposed to those who have already made it to Europe.

Critics say that response has been meagre when compared with the 1.1 million asylum seekers who arrived in Germany last year. Campaign groups and more than 80 Church of England bishops have urged Cameron to do more.