Red Bull chief Christian Horner has revealed that Lewis Hamilton's high profile coming together with Max Verstappen was "basically the force of a small aircraft accident".

Hamilton crashed into rival Verstappen in the first lap of the British Grand Prix race at Silverstone, causing the Belgian-Dutch racer to quit the race.

At the time Hamilton was awarded a 10-second penalty and judged "predominantly to blame" for the controversial incident.

Red Bull requested a reassessment of that penalty, submitting new evidence such as GPS data highlighting car positioning, but it was later rejected by Formula 1 officials.

Christian Horner accused Hamilton of "knowingly" not avoiding contact (

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Getty Images)

Horner, who admitted he expected the reassessment request to fail, has now spoken out about the true severity of the crash.

The 47-year-old recalled the moment the cars collided and the agonising wait to hear if Verstappen was still responsive.

He told The Daily Mail : "At first we didn't hear anything back. You see a shunt like that, you just want to hear a voice.

"Then we heard a long groan. And finally he spoke.

Red Bull driver Max Verstappen (

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Getty Images)

"It was a 51G crash — bearing in mind 10G would knock a person out."

The seething Horner went as far to suggest that "Hamilton knowingly did not avoid contact" with Verstappen - a claim Mercedes are said to be furious at, given its personal nature.

The Red Bull boss went on to admit that his driver was 'lucky' to come out unscathed.

He continued: "That was the biggest crash of his career. And he was lucky. He was lucky the way it went, lucky the car did not stick on the gravel and go over.

"Lucky it wasn't nose first. Lucky for the Halo, too.

"The crash broke his seat, it properly knocked the stuffing out of him. It was basically the force of a small aircraft accident."

Following the crash, Verstappen went through a series of CT and MRI scans to check the driver over for any internal injuries.

Both drivers spoke about the Silverstone incident in press conferences on Thursday before the hearing was held.

Hamilton clipped Verstappen leaving Red Bull furious (

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Formula 1)

Hamilton said he called his rival to make sure he was OK and "let him know the respect is still there", but didn't show any regret for causing the collision.

He said: "I would do it exactly the way I did it last. In terms of how I have reviewed it or analysed, from all my experience. And my experience over the years speaks for a lot. I wouldn't change it.

Hamilton said: "I don't believe our behaviour was disrespectful but it is one thing knowing and then celebrating what happened and one thing not knowing and celebrating. And I wasn't aware [Verstappen was in hospital].

"Emotions were running high. It wasn't an intentional celebration. It was just the joy of seeing so many people together and celebrating. It was the natural emotion. I am not going to hide my emotion."

Lewis Hamilton celebrates after winning the British Grand Prix (

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PA)

The two racing foes are back in action this weekend at the Hungarian Grand Prix.

The Grand Prix is the last before a three-week summer hiatus for F1.

After Silverstone's drama, Verstappen will start the race with an eight-point lead over Hamilton.

Qualifying for the race takes place today, Saturday July 31, at 2 pm with the Hungarian GP proper beginning at 2 pm on Sunday August 1.