Charles Leclerc heads out on the hard tyre, Ferrari team-mate Lewis Hamilton is trying on the mediums on for size, Oliver Bearman has gone C6 soft in the Haas. Once again all the colours of the Pirelli rainbow are on display.

Max Verstappen is an early caller to the practice session phone-in and he asks his Red Bull engineer if this is the same helmet and visor from FP1? Yes it is, says Gianpiero Lambiase. The Dutchman doesn't respond, so hopefully we'll find out the reason for his question as we go along.

Monaco second practice is green.

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The 5 Live commentary team are back with us from Monaco.

To tune in, click the 'listen live' tab at the top of this page or you can ask BBC Sounds to play Monaco Grand Prix, followed by practice two, via most smart speakers.

You can also listen a new way by scrolling through the live radio dial at the top of BBC Sounds and tapping on Sports Extra 2.

Image source, PA Media

It was a funny old session for Charles Leclerc. The Monegasque driver, winner here in 2024, flagged various issues with his Ferrari before putting in the quickest time of the hour with a 1:11.964.

No sooner had Leclerc said the car was 'nowhere', up he popped with a rapid lap on the C6 soft to beat four-time world champion Max Verstappen and the McLaren of Lando Norris.

Williams' Alex Albon and the other McLaren of Oscar Piastri completed the top five.

Leclerc's team-mate Lewis Hamilton also had struggles in his Scuderia, taking a hard hit over the kerb at the swimming pool section after clipping the wall.

Andrew Benson
BBC F1 correspondent in Monaco

Image source, Getty Images

There are those in the F1 paddock who feel that the move is a contrivance, a knee-jerk reaction to a specific set of circumstances that happened to unfold last year.

In 2024, a crash up the hill after the first corner led to a safety car and pretty much all the field pitting at the end of the first lap, and fitting hard tyres to go to the end.

Because the life of the tyres was marginal, pole-sitter and leader Charles Leclerc controlled the pace in his Ferrari, and basically nothing happened for the final 77 laps.

It was pointed out that, in reality, not much has changed for decades. Overtaking has been pretty much impossible at Monaco for at least 40-50 years.

But, having explored the possibility of modifying the track layout to introduce an overtaking spot and discovered it was not possible, it was felt that it was time for a change.

Image source, Getty Images

Sunday will see a change in Monaco with the introduction of a mandatory two-stop race which F1 bosses hope will add an element of spice to the 78-lap grand prix.

With overtaking difficult on the narrow, twisty streets of Monte Carlo, drivers will be required to make a minimum of two visits to the pits during the race, possibly forcing teams to take a gamble on tyres and strategy.

If rain arrives then drivers can use a mix of slicks, intermediates and full wet tyres to hit the two-stop target. Each driver has also been allocated an additional set of the blue wets, on top of the usual two, just in case the weather reaches extreme conditions.

Andrew Benson has broken down the two-stop rule, which includes the drivers' views on how Sunday might play out.

Image source, PA Media

Charles Leclerc ended up with a busted nose from his collision with Lance Stroll, while the Canadian driver had to sit out the rest of the session because of the damage to his car.

The two clashed when Stroll was on a slow lap and moved back onto the racing line, unaware Leclerc was coming up behind him at the hairpin.

Stroll said he didn't hear the radio message from his pit wall informing him of Leclerc's arrival, and the stewards decided the Aston Martin man was "wholly to blame" for the contact.

As his punishment, Stroll has been handed a one-place grid penalty for Sunday's Monaco Grand Prix.

Image source, Getty Images

Hello again, folks. The conditions on the French Riviera are perfect for some late afternoon action at the iconic Monaco circuit.

Second practice gets under way at 16:00 BST.

We saw plenty of drivers during the opening hour hampered by heavy traffic and slow-moving rivals, with the biggest incident of the session coming early on between Charles Leclerc's Ferrari and the Aston Martin of Lance Stroll. The pair had to visit the stewards during the break. What was the outcome?

Stay tuned...

Andrew Benson
BBC F1 correspondent in Monaco

Image source, Getty Images

Charles Leclerc set the pace in first practice at the Monaco Grand Prix, despite consistently complaining about the behaviour of his Ferrari.

Leclerc, who won his home race for the first time last year, said at various times that Ferrari were "nowhere" and that there was "something wrong with the car".

But he ended the session 0.163 seconds ahead of Red Bull's Max Verstappen.

McLaren's Lando Norris was third, 0.326secs off the pace, with Williams' Alex Albon fourth and championship leader Oscar Piastri fifth.

Leclerc, who was pessimistic about Ferrari's hopes for Monaco, had an incident-packed session.

Read the full report here

Ferrari's Charles Leclerc recovered from his early shunt with Lance Stroll's Aston Martin to finish quickest in first practice but now the two drivers will be taking a trip to the stewards to discuss their collision. Stroll missed most of that session because of the damage to his car, so there's work to do for the team during the break.

Dinnertime! Go grab something to eat and come back and join us at 15:45 BST for build-up to second practice.

See you shortly!

11. Kimi Antonelli (Mercedes)

12. Nico Hulkenberg (Sauber)

13. Isack Hadjar (Racing Bulls)

14. Yuki Tsunoda (Red Bull)

15. Ollie Bearman (Haas)

16. Esteban Ocon (Haas)

17. Liam Lawson (Racing Bulls)

18. Gabriel Bortoleto (Sauber)

19. Franco Colapinto (Alpine)

20. Lance Stroll (Aston Martin)

1. Charles Leclerc (Ferrari) - 1:11.964

2. Max Verstappen (Red Bull) +0.163

3. Lando Norris (McLaren) +0.326

4. Alex Albon (Williams) +0.350

5. Oscar Piastri (McLaren) +0.378

6. George Russell (Mercedes) +0.518

7. Carlos Sainz (Williams) +0.570

8. Pierre Gasly (Alpine) +0.705

9. Lewis Hamilton (Ferrari) +0.726

10. Fernando Alonso (Aston Martin) +0.763

Rosanna Tennant
5 Live F1 reporter in Monaco

I think the Monegasque fans and Ferrari fans in the grandstand will be thrilled with that.

His fellow rookie, Kimi Antonelli, who finished the session 11th in FP1, had a moment clipping the wall at Massenet. It's been a tough start to the weekend for the newbies.

Racing Bulls rookie Isack Hadjar says that was the busiest first practice session of his life.

How is the other Red Bull of Yuki Tsunoda getting on? The Japanese driver has reached the final corner but oops, a slow-moving Haas blocks his clear run to the line. "That guy," says Tsunoda, with a sprinkle of blue language for maximum impact.

1. Charles Leclerc (Ferrari) - 1:11.964

2. Max Verstappen (Red Bull) +0.163

3. Lando Norris (McLaren) +0.326

4. Alex Albon (Williams) +0.350

5. Oscar Piastri (McLaren) +0.378

Andrew Benson
BBC F1 correspondent in Monaco

Fred Vasseur, the Ferrari team boss, says that everyone is going to have a new front wing from Barcelona [when new front wing regulations come in] and there is going to be a reset of the field. I don't know but I suspect Vasseur is going to be disappointed. Everybody's front wing is flexing at the moment, so if they all have to flex a bit less, why would it affect one team more than another?