Hadden claims Englands team are there to be beaten in the RBS 6 Nations Championship opener, but acknowledges Scotlands players must make life hard for the home side in the early stages.

As he enters his second 6 Nations campaign as national coach, Hadden is well aware it has been 24 years since Scotland last won at the home of English rugby union.

His team have spoken a good game all week, believing their own improving fortunes with injury, a growing list of casualties in the England camp, and Brian Ashtons team selection could combine to make it a great day for the Scots.

They also beat England at Murrayfield last year, another factor in the confidence.

Yet Hadden has warned that the tone for Saturdays match will be set inside the opening stages, and defeat will become likely unless Scotland impose themselves on the contest.

I think everybody is aware that theres only a certain amount of confidence to go round, Hadden told STV.

We want to grab as much confidence as is available on the day by the way in which we perform in the first 20 minutes.

Jim Aitken captained Scotland to a 22-12 Twickenham victory in 1983, since when each trip has ended in disappointment.

However Hadden sees potential fallibility in the England ranks this time.

He accepts that England could turn out to be quite brilliant, and by including World Cup hero Jonny Wilkinson after only 50 minutes of his latest comeback new coach Ashton has shown his readiness to gamble.

Former Great Britain rugby league captain, 31-year-old Andy Farrell, will line up alongside Wilkinson at inside centre, making a union Test bow after just seven appearances for Saracens.

Farrell's former Wigan colleague Jason Robinson returns for a first England appearance since retiring from Test rugby in September, 2005, while his fellow World Cup winner Mike Tindall is also back.

Hadden pointed out: I think the England side has a bit of a look of the Barbarians about them.

Theyve got a lot of very experienced players, a lot of World Cup winners, in their side.

I think there is a lot of uncertainty about how theyre going to perform, and I suppose that just makes the game even more exciting than usual.