London, Apr 1 : Defender Rio Ferdinand says England has "still got a lot to prove" despite their flying start under coach Fabio Capello which has put them on course for the 2010 World Cup finals.

England will move another step to achieving that goal if they achieve their fifth successive victory in their qualifying group by defeating Ukraine at Wembley on Wednesday night.

"We are a work in progress. We've won four games in our qualifying group. Loads of teams around the world win four games on the bounce. It doesn't make us a great team. We know that we've still got a lot to prove," the Daily Express quoted Ferdinand, as saying.

"We're not in a position where the manager can say `Well done, you've achieved this and that'. We have not achieved anything," he added.

Ferdinand admits the England camp is a happier place to be when results are favourable and how the "aura" surrounding Capello means the players are keen to make an impression.

He revealed Capello is not afraid to put his point across, adding: "Fabio is out on the training pitch and very vocal. He is very direct and straight in saying this is what I want, this is how it is going to be."

"He's like that on a one-to-one basis as well. He does more in a group situation but if he sees something out on the pitch, he's not shy about grabbing you and telling you what he wants," Ferdinand said. (ANI)