The issue of sending direct military aid to Ukraine is not being considered, Australian Foreign Minister Marise Payne said, AAP reports.

Payne said she had contacted her Ukrainian counterpart and indicated that Australia would be ready to consider any calls for help, but no official requests had been made.

To be clear, this is not about direct military support. From the point of view of Australia, this is not discussed, she told reporters after talks with her British counterpart.

Australia's ambassador to Ukraine, Bruce Edwards, said the country would be prepared to apply additional autonomous sanctions if warranted.

British Foreign Secretary Liz Truss said Australia and the UK will be united in their response.