England have conceded 49 penalties so far in the tournament, that is an average of just over 12 and Woodward knows his side must get that figure down.
Speaking to the official Zurich Premiership website, Woodward said: "What we are trying to do going into this game is give away less penalties, we have got to get down to single figures, we are working, very, very hard at it but I think that the referees have been spot on so far, we have just been a little bit slack in the way that we have been playing."
Arch-rivals New Zealand are the least penalised side in the competition with just 27, that is an average of around seven a game so far.
Meanwhile, Woodward has said he is looking forward to what promises to be a "special" game against Wales, saying the different surrounds from the Six Nation adds a great deal to the occasion.
"I think that in the sanctuary of the Six Nations we are very comfortable playing them in Cardiff and Twickenham and this is just a complete one off and you can't over state that.
"This is a totally different game especially with Wales coming off the back of a good performance against the All Blacks even thought they lost.
"It is a very special game and both teams know that if they get it wrong you are flying home on Monday, which adds to the whole occasion," Woodward said.
