Captain Charlotte Edwards has warned her team not to become complacent after England took a big step towards retaining the Women's Ashes in Australia.
England secured a 61-run victory in a dramatic Test match at the WACA but Edwards believes that their rivals will fight back in the multi-format series.
"This is not The Ashes won," said Edwards. "They are a great team who are quite capable of coming back. But we've got the momentum with us at the moment and we've got to keep it.
"We have to keep working hard and hopefully that will see us through and take The Ashes home."
The series continues when the two sides meet in the first ODI on Sunday.