England back-row forward Tom Wood has credited his side's intensity and hard work for their success so far in the Six Nations.
England are the only unbeaten side left in the tournament after two rounds of competition, with Wood highlighting the close links within the group that could see them win a Grand Slam.
"I don't think there's any limits to what we can achieve," said Wood.
"We have to keep focusing on the next job and stay very grounded. All our victories so far have been built on that intensity and hard work. They are not built on individual flair or individual talent they are built on togetherness and the culture that underpins that.
"The moment we forget that and get ahead of ourselves we are in trouble. It's our ferocity in the breakdown, our energy in defence, our willingness to work for each other that is making the difference and we need to keep remembering that.
"I like to think [we could win a Grand Slam]. If we get things right, we're going to be a very difficult side to beat because we are hard to break down. France will be hurting after recent weeks, Wales are finding some form and will be tough at the Millennium Stadium and Italy are showing what they are capable of, so we'll keep our feet firmly on the ground.
"I think it was a pretty big achievement to come up against such an experienced [Irish] team in challenging conditions and get the win.
"We measure ourselves in terms of consistency and the biggest thing for us is that we didn't just get up for one game against the All Blacks.
"We managed to back it up against Scotland and we came away to a really tough environment and did the same again. We won with a lot of flair and scored some tries against New Zealand and we have come away here and ground out a hard-fought win against a really aggressive, powerful side.
"We're winning in different ways. That is the way we are evolving now."