India v England: James Anderson insists tourists will fight for victory in Mumbai

James Anderson insists that England have to "keep believing" despite a day of struggle in the fourth Test in Mumbai.

England require a mammoth effort on day five to avoid defeat having closed on 182-6, still trailing by 49, after Virat Kohli's double century helped India to earn a 231-run first innings lead.

However, with England needing a win to keep the series alive, there are no plans to try and hold out for a draw.

"We've got to keep believing," Anderson told Sky Sports. "We've still got batting to come; Jos [Buttler], Chris Woakes and Adil [Rashid] can bat too.

"We're not going to come out of this game with a draw - we want to try and win this game so we're going to have to bat extremely well tomorrow and try and get enough past them to try and put some pressure on."

England began the day needing three wickets to wrap up the Indian innings, with the hosts already leading by 51, but were frustrated by Kohli and Jayant Yadav throughout the morning and into the afternoon session.

"We came here this morning thinking that if we could get those three wickets quite quickly, we're still in the game," Anderson said.

"Obviously, we'd have to bat well but we wouldn't be too far behind in the game. Unfortunately that didn't happen, it was probably our worst morning on the whole tour from a bowling point of view and the control that we produced.

"They got away from us a little bit early on and then we were just clawing it back from there. They played really well, Kohli obviously played fantastically well, and was supported well by Yadav."

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While the bowlers struggled, England's leading Test wicket-taker maintains that - even as Kohli and Jayant's partnership grew - the tourists kept their cool.

"I thought we remained calm, we tried to stick to our plans," added Anderson. "As seam bowlers we knew what we were trying to do: hit our areas, bowl to certain fields.

"We changed it up quite a bit as well, when they built a partnership we thought we'd try something different to take them out of their comfort zone but we can't quite find the right formula the last couple of days."

Watch the fifth and final day of the fourth Test between India and England, in Mumbai, from 3.45am on Monday, Sky Sports 2.