Skipper Hill, playing at full-back, was the architect of the goal as he maintained his run via a one-two with Austin before putting the ball on a plate for Johnson to rifle home.
It was also a twist of irony that Freedman's former strike partner at Crystal Palace snatched the goal which left his Wanderers side still searching for their first league win after four games.
Freedman was not too downcast after the defeat though.
He said: "I felt our performance, especially the first half, merited at least a goal. We showed great approach play; we're playing against a really top team in QPR and we did very well.
"Their one and only opportunity they've cut us open and they've scored the goal. From then on they've showed a ruthlessness in their defending.
"They're a very experienced outfit, know when to give away 'professional' fouls at the right time and break the game up. I'm very proud of my lads' effort, I'm very proud of what they showed."