ActionAid UK's Head of Policy and Advocacy Alison Holder said:
"We are encouraged by the Prime Minister's commitment to create a fairer economy. It’s great to see an emphasis from the G20 on creating jobs and tackling tax avoidance. However, we now need concrete action.
"Every year developing countries lose hundreds of billions of dollars from tax avoidance. This is money that could be used to tackle poverty, especially among women and girls who are often most affected.
"In order to end this, Prime Minister May and global governments must ensure there is a greater transparency, that poor countries are given an equal voice in the negotiations and that active steps are taken to resist a global tax-cutting race to the bottom."