London: MPs from both sides of British politics have been accused of "lecturing Australia" after they used a parliamentary debate on the bushfire emergency to urge the Morrison government to lift its game on climate change.

Australia's emissions reduction targets were criticised by Tory, Labour and Scottish National Party MPs during the rare House of Commons debate convened by Speaker Lindsay Hoyle, who called the disaster a "wake-up call for the world".

Nearly three dozen MPs participated in the session, in which it was revealed Britain had dispatched a team of experts to Australia - at the Morrison government's request - to help respond to the crisis which has claimed nearly 2000 homes and 25 lives.

Several members of Prime Minister Boris Johnson's backbench criticised Australia's response to climate change and encouraged the British government to lobby for more action from Australia and the world on lowering emissions.