Alastair Cook's luck and form remains wretched, but Stuart Broad insists there will be no fretting from the England captain about a dismissal he could do little about.

Cook continued his long run - a "rut", Broad concedes - with a contribution of just five before he contrived to be bowled round his legs by Mohammed Shami off the under-side of his thigh pad.

The captain's latest failure, continuing a sequence of 25 Test innings without a century, followed a last-wicket stand of 111 between India's numbers nine and 11, Bhuvneshwar Kumar (58) and Shami (51no), on day two of the Investec series at Trent Bridge.

The tourists piled up 457 all out, before England lost only Cook on the way to 43 for one in reply at stumps.

Broad believes the circumstances of Cook's seventh successive Test dismissal for under 30 mean there is no reason for self-reproach.

"The ball was probably missing leg-stump if not (just) flicking when it caught the thigh pad," he said.

"You just can't do work on those sorts of dismissals. It is just one of those things - like getting caught down the leg-side.

"I'm sure Cooky would have been more disappointed in the changing room if he'd 'nicked off' to 'fifth' stump - rather than being bowled round his legs off his thigh pad.

"It really is one of those dismissals that you can't do a huge amount about, and he'll be looking forward to batting in the second innings."

Broad is optimistic not just for Cook's second chance here, but his team-mates' prospects in the first innings.

"After day two of our last Test (at Headingley), I think Sri Lanka had an eight per cent chance of winning - and they ended up winning," the seamer said.

"A session in Test cricket can change it. The third day is always the 'moving' day, a huge one for us.

"If we can get a good start and build, I'm sure the Indian bowlers won't be looking forward to bowling at Ben Stokes coming in at number eight when you're a bit tired.

"We can certainly get a big score if we get our heads down."

The slowest of pitches has given Broad, James Anderson et al zero assistance and forced Cook to invent a series of new fielding positions to try to eke out wickets.

Broad is encouraged, however, that groundsman Steve Birks took the unusual step of apologising for conditions after day one.

"I think the best thing that's happened is Trent Bridge have come out and said 'Look, our mistake', and apologised for the pitch.

"It's certainly not what England would have asked for, not what Trent Bridge would have hoped for.

"Let's just hope that other grounds don't follow suit."

Kumar made the most of conditions, as an unheralded batsman, and believes he can have some success with the ball too.

"We are confident (of bowling England out twice)," he said.

"We know the wicket isn't as good as generally in England.

"It's more like an Indian wicket, and we have enough experience of how to play there. So we know how to bowl on it.

"We'll have to be really patient, and keep it wicket to wicket and really simple."

He reflected in similar terms on his partnership with Shami.

"We just tried to play as long as possible.

"Any team will get frustrated if the number nine, 10 or 11 gets 50.

"I don't know if they were getting frustrated or not, but Shami and I were enjoying it."