Zak Brown has warned Christian Horner that he should be worried about his position at Red Bull.

It comes after Horner was roundly booed during the F1 75 launch event in London last month.

Brown also pointed to the recent departures of key staff members, admitting that he would feel ‘vulnerable’ if he was in Horner’s position.

“I would think any of us would come under pressure when you are not performing at the highest level, on-track, off-track, with sponsors, relationships, and brands,” said Brown.

“If I went to the F1 launch and I wasn’t welcomed, and I came back to the table and I am sitting next to the CMO of our sponsors OKX and Mastercard, that is not a great look.

“You have got the Red Bull managing director [Oliver Mintzlaff] sitting there. And then you have got the Verstappens who don’t seem to have a great relationship [with Horner], from the outside looking in.

“Adrian Newey, Rob Marshall and Jonathan Wheatley have all left and if I was in that position, I would feel vulnerable. When I go and meet my board, I would not be feeling great because they would be going, ‘Well, why did he leave? Why did he leave? And why did he leave?

“Oh, and by the way, you didn’t seem to get a very warm welcome at the launch’. I don’t know how they feel. But I would feel vulnerable.”