Lee McKenzie grabs a word with Sergio Perez, who confirms he is OK before talking through what he thinks happened.

"The track is so dirty at the moment and I lost the rear of the car and went into the wall," he says. "I don't think there was suspension failure. The car crash collided at a very difficult angle which made it roll over.

"The car looked quite bad. Hopefully we can do a bit of FP2."

Sergio Perez is strolling back from the medical centre after being checked over. He looks a little shaken, but lifts his hand to wave to the crowd as they cheer him as he walks by.

Meanwhile, his stricken car has been removed from the circuit, the marshals have swept up the debris and FP1 should be back under way shortly.

Allan McNish
BBC Radio 5 live analyst

"I've just seen a replay of the crash and it looks like the right front tyre digs in, which caused it to flip. When you run over the exit kerbs you get lot of vibration through the suspension and it looks like it was at that point when the right rear suspension failed and pitched him to the barrier."

Ben Edwards
BBC F1 commentator

"I think Sergio Perez will be automatically taken off to the medical centre because it will have been registered as a big impact, even if he is up and walking about, apparently uninjured."

Perez's crash happened at Turn 11, with the car sparking when he rode on to the kerb. The right rear suddenly gives out and sets him off skidding into the barrier.

Sergio Perez crashes heavily, his car flipping upside down after skidding into the barrier, and the session is red flagged. He is quick to say he is OK on the radio thankfully.

Everyone bar the two Lotus' - who have not been out since their installation laps - are on the track at the moment as Felipe Nasr has a moment at Turn One, locking up but keeps it together to regain control and continue without bother.

Image source, Getty Images

Jenson Button knows how to win in Hungary, having done so in 2011 and in 2006, when he came through the field to win from 14th.

Image source, McLaren

Several others have ventured back out on to the circuit, including the McLaren duo of Fernando Alonso and Jenson Button, both sporting these dazzling pieces of footwear...

Alonso is currently 10th fastest, with Button down in 16th.

SB Walch: Jules will be remembered along with the greats of F1. Talented driver - he will be missed.

The Banter Sponge: My favourite memory of Jules was the P9 at Monaco, especially when he got back into the pits and how much it meant to Marussia.

The current track temperature is not quite as hot as yesterday as it creeps up to a feet-hopping 42 degrees C. Felipe Nasr breaks the silence over Hungaroring as he fires up the Sauber and heads back out on to the circuit.

Image source, Pirelli

It looks like it is going to be a scorcher of a weekend in Hungary, with track temperature a tarmac melting 59 degrees on Thursday. Yowzer.

The live streams of FP1 are now fixed and up and running so you can watch the remaining 47 minutes right now.

Don't forget you can also view the extra camera streams during practice these days, including pit-lane feed, driver tracker and on-board.

All quiet on the circuit at the moment with cars being prepped for their second runs. With this being the last race before the summer break, there will be plenty of drivers further down the field keen to put on a good show this weekend and strengthen their chances of securing a seat somewhere next season.

There has been movement already in that regard, with Sauber extending the contracts of Felipe Nasr and Marcus Ericsson for 2016. You can read more on that here.

Andrew Benson
Chief F1 writer

"Who will come out on top in the battle for best of the rest behind Mercedes? Although Sebastian Vettel ended up on the podium at the British Grand Prix, Ferrari had an off weekend at Silverstone, unable to keep pace with Williams, and it took an inspired strategic call and Williams's poor pace in the rain to elevate the German. That could indicate a difficult weekend for Ferrari. On the other hand, their car is good in the heat.

"Williams struggle for low-speed downforce - just look at their lamentable performance in Monaco - but have made improvements since then and Valtteri Bottas pointed out that he qualified third last year in Hungary.

"And there's Red Bull, for whom the power deficit of the Renault engine is punished less in Hungary than at most other tracks. 'We'll start the weekend aiming for a top five and see if we can improve on that,' Daniel Ricciardo said."

These are the latest top 10 times as we pass the hour mark.

1. Lewis Hamilton (1.25.291) 2. Nico Rosberg (1:26.221) 3. Daniel Ricciardo (1:26.350) 4. Kimi Raikkonen (1:26.439) 5. Max Verstappen (1.27.329) 6. Carlos Sainz (1:27.344) 7. Fernando Alonso (1:27.526) 8. Valtteri Bottas (1:27.737) 9. Felipe Nasr (1:27.749) 10. Sergio Perez (1:28.003).

Tuhairwe Herman: Jules Bianchi was the future of F1. Even in coma, his resolve to always fight on was the embodiment of the F1 spirit.

Amit Mandalia: I was lucky to briefly meet Jules a week after his Monaco points for Manor & was able to congratulate him in person