Robbie Henshaw has declared himself fit and ready to enter England's 'hostile cauldron' for part three of Ireland's Six Nations Grand Slam quest.

Henshaw took a bang to the head in the 24-14 win against  Wales last time out and had to come off after he failed his head injury assessment.

"I was enjoying the game," said Henshaw who started the tournament opener against Scotland on the bench.

"It's not ideal, not being able to finish the game, but the lads did an excellent job finishing it off and getting the bonus point."

The bonus point may come into play at the end of the tournament but for now, the Grand Slam is still on for Andy Farrell's team.

A win against the Auld Enemy this Sunday keeps that hope alive while also clinching a twelfth Triple Crown for Ireland.

"That's in the background," said Henshaw when asked if winning that trophy was part of the focus for this week.

"The focus is on ourselves and how we can get things right in the early part of the week and then build towards the end of the week, to put in that clinical performance."

Nothing less than a clinical performance will do for an Ireland team that has won an impressive four Six Nations matches in their last eight visits to the home of English rugby.

"It's been a good start for us but we're well aware of the challenge going to Twickenham," added Henshaw.

"We've all played there before and we can expect it to be a hostile environment and a really tough place to go but we have that bit of confidence from two years ago [when Ireland won 24-15].

"We went there with our backs to the wall and we had the Grand Slam on the line so we have that bit of confidence that we've been there before.

"It's obviously a tough place to play but on a positive not, we've pulled out big performances there before.

"It's a cauldron-like atmosphere when you're playing there. You're [up] against a tough opposition and a tough crowd.

"We're under no illusions. It's a very tough place to play."

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