Dennis drained

"I'm tired, stressed, pressured, so there's a lot of emptiness after a stressful weekend," Dennis told ITV.

McLaren were already in a difficult position when they arrived in Hungary following their FIA hearing over their involvement in the 'spygate' scandal.

And things then took a turn for the worse when a pit-lane incident that involved Fernando Alonso and Hamilton saw the polesitter demoted five places on the grid by the race stewards for delaying his team-mate's exit from the pits.

Additionally, McLaren were prevented from scoring Constructors' points in the race - subject to an appeal by the team - and also told they would not be allowed to receive the Constructors' trophy on the podium.

"What happened yesterday was unacceptable," Dennis added. "Neither driver is blameless in the affair. You are under lots of pressure at that point in a qualifying session and at times like these you do things to small margins.

"Fernando crossed line with under a second to go to start his final qualifying lap, which shows you it was not contrived. It was just a legacy of pushing our system to the limits and sometimes you go over the limits. The consequences are painful."

"Our team has an extremely strong commitment to parity, and as hard as you try to enforce this there was a deviation from our plans in qualifying and it put the team in a difficult position which will have cost us all our constructors points in the event that we do not win an appeal to have the result of an FIA decision overturned."

McLarens prevention from scoring Constructors' points cost them 15 in Hungary and allowed Ferrari to cut their lead from 27 points to 19 thanks to Kimi Raikkonen's second place.