Both players were involved in the thrilling final day victory over Australia at Lord's on Monday during an Ashes series which has captured the imagination of the sporting world.

But despite the interest in the series, Pietersen believes it is still possible that the growing influence of Twenty20 cricket could dominate to such an extent that five-day international cricket becomes a thing of the past.

One key factor cited by Pietersen was the retirement from the longer format by key players, a reference, perhaps, to England hero Andrew Flintoff's decision to end his Test career at the end of the summer but continue with limited overs internationals.

Strauss, though, believes scenes like the Lancashire all-rounder bowling his side to a first Lord's victory over Australia since 1934 will ensure Test cricket endures.

Asked if he shared Pietersen's concerns, Strauss told Sky Sports News: "No, I don't actually. I think Test cricket will be around and I think series like this Ashes series show what value Test cricket has, what a great future it has and what a great game it is.

"I think Test cricket is going to be around for a long time to come. It might need to have some different marketing but I'd be very surprised if England and Australia aren't playing an Ashes series in 20 years' time. That would be a massive surprise."

Pietersen, who is battling against an ongoing Achilles injury in his bid to play a part in the remaining three Tests against Australia had earlier told the same channel he had only recently started to fear for the five-day game.

"A few months ago I was so clear in my thoughts that nothing would affect Test cricket but then you see what certain players are saying in the media and what kind of players are retiring to continue with the Twenty20 format as well as the riches of Twenty20 cricket.

"I'd be a fool to tell you now that Test cricket will be there in 10 years' time because I don't know now."

Strauss, meanwhile, stressed that although he had celebrated England going 1-0 up in the series in style, there would be no complacency when the sides reconvene at Edgbaston on July 30.

"I woke up this morning with a bit of a hangover," added the batsman.

"When you get a good result it's important to enjoy it. But nobody in our side thinks the Ashes is won. It's one little step along the way. The next Test at Edgbaston is a huge Test and the Aussies will come hard so we need to be strong enough and well-prepared enough to be ready for that."