Wayne Rooney admits that he was not at his best as England were held by Poland, while Steven Gerrard is targeting a perfect finish to qualification.
A frustrating week for the Three Lions came to a head on Wednesday when Roy Hodgson's side stumbled their way to a 1-1 draw in a game which had been pushed back from Tuesday evening amid farcical scenes involving heavy rain and an open roof.
Rooney nodded England in front at the Warsaw National Stadium, but saw Kamil Glik level for the hosts 20 minutes from the end - leaving the Three Lions hanging on for a share of the spoils.
A point was about all Hodgson's men deserved after putting in a disjointed display and Rooney, who was taken off after 73 minutes, admits he and his team-mates need to raise their game.
"I know I can play better than that," said the Manchester United striker.
"It was hard work. First half I was making long runs back and then trying to get forward and then went out to the left for the second half and I was a bit tired, so I've no problem with being taken off.
"The pitch wasn't great, it took a lot out of your legs, but I was delighted to score."
England are now just one point ahead of Montenegro, who have a game in hand, at the top of Group H and national skipper Gerrard admits there can be no more slip-ups on the road to Brazil 2014.
"The lads are disappointed - we know we can play better," he said.
"We're playing at the top level and we had to get ourselves up for this but I didn't think we were totally at the races. We never passed the ball well enough, for whatever reason.
"Montenegro got a fantastic result in Ukraine, which has turned the group in their favour. That's why we wanted maximum points to go into the New Year in the driving seat.
"Our points tally could be a lot better. We have to make sure we take maximum points from Montenegro when we play them. I'm confident we can beat all the other sides."