Tony Abbott is making a quick visit to Singapore on his way back from London.

Prime Minister Tony Abbott has made a brief stopover in Singapore on his way back from London.

It is understood a meeting is being arranged with Singapore prime minister Lee Hsien Loong, who this week marks 10 years in office.

Mr Abbott has invited Mr Lee to attend the G20 leaders summit in Brisbane as a guest.

The prime minister is expected back in Canberra on Thursday night.