Malcolm Turnbull and Theresa May have met Australian ambulance officers who responded to last month’s terror attack in London.

The prime ministers visited the Borough Markets on Monday after greeting a range of first responders, including Australian ambulance officers, and police.

The leaders, who have known each other since their Oxford University days, then walked through the market, talking to stall holders about the devastating event.

As they stood just near where the terrorists were shot dead, some of the vendors described how terrified people reacted.

“You’ve shown great resilience,” Mr Turnbull said.

The Borough Markets only recently reopened after the June 3 attack, in which eight people were killed and almost 50 wounded.

Three terrorists drove a van into pedestrians on London Bridge before abandoning it to run into the popular area, stabbing people with foot-long knives as they went.

Kirsty Boden (L) and Sara Zelenak were killed in the London terror attacks.

The attackers killed two young Australian women – South Australian nurse Kirsty Boden and Queenslander Sara Zelenak.

Mr Turnbull earlier received an intelligence and security briefing from top British officials ahead of his first No.10 Downing Street meeting with Mrs May.

The Prime Minister and Metropolitan Police commissioner Cressida Dick – Scotland Yard’s first female boss – discussed terrorist attacks in the UK and Melbourne as well as the June 14 Grenfell Tower fire.

They talked about better ways to protect crowded places, a big issue for London, and the challenges of cyber-terrorism and encryption, which was a focus of talks at the G20 summit in Hamburg.

Commissioner Dick took on the role on April 10, with her first official engagement being the funeral of PC Keith Palmer, the officer killed in the Westminster attack.

The current UK threat level for international terrorism is “severe”, meaning an attack is highly likely.

The leaders discussed the “opportunities” raised by Britain’s exit from the European Union, including a potential free trade deal with Australia once Brexit occurs.

“Discussions on an ambitious and comprehensive bilateral trade deal with Australia remain a priority for the UK,” Mrs May is expected to say.

The UK cannot legally negotiate trade agreements until after exiting the European Union but Mr Turnbull wants to move as quickly as possible when that happens.

He is also aiming to conclude an FTA with the EU by 2019.

Before heading home, Mr Turnbull will also have an audience with the Queen.

On Monday night (London time) he will deliver a speech on freedom in the context of national security and receive the Policy Exchange’s 2017 Disraeli Prize.

-AAP