Millwall boss Neil Harris says the assist leading to the Lions’ 1-0 London derby win against QPR was what ultimately decided the game.

Skipper Steve Morison connected with the winning header at the back post after a well-timed cross by winger Jed Wallace on 55 minutes.

It is the 34-year-old’s first goal of the Sky Bet Championship season so far, and came at a time his side needed it most in a nervy affair.

But Harris told his squad before the hotly contested tie that it would come down to a few important moments.

He told News Shopper: “It’s a great evening because we have got three points.

“There was an added spice about the game because of Olly [Ian Holloway] coming back to his old club.

“So the atmosphere we generated off that, and I thought that it was a brilliant atmosphere within the stadium, I thought QPR certainly played their part. On the pitch and off the pitch with their fans.

“I thought it was a great London derby. Lacked a little bit of quality at times, but there were tackles, there was aggression, and real credit to QPR because there are not many teams who have come here [the Den] this year and knocked us out of our stride at times in the first half.

“But my boys find a way, especially here at the Den to up it. I said at half-time that it’s going to be decided by a mistake, or a moment of quality, or it’s going to peter out to a 0-0.

“That moment of quality was delivered by Jed Wallace and Steve Morison, doing what he’s done best over the years.”

Despite the victory, which now moves Millwall closer to the top half of the table, the Lions boss rued that it was far from his team’s best performance this season.

Both Morison and strike partner Lee Gregory slipped inside the penalty area in crucial chances within the opening half hour as the Lions pressed QPR for the opening goal.

He added: “There were not a huge amount of tackles but there were a lot of challenges, and that maybe shows there was a little bit of a lack of quality at times.

“What I said to the players was that if I was really being critical tonight, and that is hard after getting the three points and what you have achieved so far this season, but if I am being critical then that is the worst we have played for a long time.

“We played ten times better than that at Derby [County] and got beat 3-0. We’ve played some teams off the park here, and credit to QPR but the first touch we had and the last end product we had was nowhere near to the level that we have set so far.

"I said to the boys to not take that as a dig at them, but if we want to keep building then we have got to be better than that tonight.”