Sven Goran Eriksson's side have yet to be totally convincing following wins over Paraguay, Trinidad and Tobago and Ecuador, along with a draw against Sweden. What they have done is win Group B and subsequently book a last eight date with Portugal in Gelsenkirchen on Saturday afternoon.
Our skipper believes results are the all-important ingredient on the World Cup stage, but accepts England may well have to raise their collective game when it comes to closing in on a July evening in Berlin.
"I think if you are into the quarter finals you have got to be happy with that, of course," reasoned Ledley. "It is about winning and, although the performances haven't been great so far, they are in the last eight and it is all you can ask for.
"Everyone knows the team can play a lot better - that is for sure. As long as they keep going, no-one will complain really. People are looking at the performances and I feel myself that they may have to improve because there are teams out there playing better.
"On the day if England are not up to scratch they may struggle, but so far we have shown more than the teams we have played and that is what has got us through so far."
Ledley went on to agree that after many an exit in glorious failure, a more pragmatic approach might serve the side well in getting to the real business end of the tournament.
"Yes, all you can do is play one game at a time and, although the performances haven't reached the team's potential, we haven't really been in danger so far.
"I'm sure the Portugal game will be a sterner test. If we don't play well and win that game then the team must be doing something right and it could end up as that sort of World Cup."
Ledley King believes England will click through the gears having successfully negotiated a passage to the World Cup quarter finals.