England may come into the second Test against Sri Lanka in Durham on the back of a crushing win in the series opener, but according to Stuart Broad the hosts have still to hit top form.

Propelled by a hundred from Jonny Bairstow and match figures of 10 for 45 from James Anderson, England thrashed Sri Lanka by an innings and 88 runs in the first Test at Headingley last week to go 1-0 up in the three-match series.

But Broad, still the world's number one ranked Test bowler, said there was no danger of England letting up when the second Test starts at north-east county Durham's Riverside headquarters on Friday.

"Obviously the series is still up for grabs and I think one thing we've probably been average at is in the last Test of the series when we've won, I'm thinking Centurion and the Oval," he added of a defeat by South Africa earlier this year and last year's Ashes-ending reverse against Australia.