Andrew Strauss keeps feet on ground after England win
England celebrate after winning at Old Trafford with two days to spare
Captain Andrew Strauss warned England there would be tougher tests ahead after they completed a 2-0 series win over Bangladesh at Old Trafford.
"We're not kidding ourselves that we're suddenly world number one," he said.
"Those last two sessions, taking 20 wickets, is quite a nice way to finish the game and we're happy with our performances over the last two games.
"We're aware there are sterner tests ahead of us but there were a lot of good things to come out of both games."
Bangladesh were bowled out for 123 in just 34.1 overs to lose by an innings and 80 runs, with Middlesex pace bowler Steven Finn taking 5-42 to take the player-of-the-series award.
Despite that, the 21-year-old acknowledged that there was still plenty of room for improvement after only four appearances for England - all of them against the weakest opponents in Test cricket.
"I bowled better at Lord's and there are a lot of areas to improve - going at more than four an over is not ideal really in a Test match," he said.
"It's about putting the right amount of balls in the right areas - I've bowled too many four balls and been a bit loose at times.
"It's been very challenging. It's easy to cope mentally when you are winning but physically, two Tests take it out of you - the intensity of it."
Bell's century earned him the man-of-the-match award
Strauss, however, was happy with the progress of his county clubmate, who will be hoping to hold on to his place for the second summer series against Pakistan, with the prospect of a winter Ashes tour to follow.
"He's got a big future, but it's very early in his career. We're just trying to keep his feet on the ground really and not over-hype him at this stage," Strauss told Test Match Special.
He admitted that he had briefly considered the option of batting again after Bangladesh were dismissed for 216 on the second day, but with bad weather in Manchester overnight and during the third morning, he decided to make the tourists follow-on.
"With a wicket that's deteriorating like that, there's always a temptation to bat again but once we got inside and looked at the weather forecast which sounded like there was going to be a fair amount of time taken out of the game...it was an easy decision to make."
Ian Bell was named man of the match for his 128, which laid the foundation for England's total of 419.
"My play of spin has improved over the winter and my footwork was going nicely - I enjoyed it," he said.
"I've tried to fight hard for England, maybe that's what I've not done in the past...when the circumstances are tough, digging in for the team. It's nice to produce that."
Bangladesh coach Jamie Siddons praised opener Tamim Iqbal for his two hundreds in the series but acknowledged that his side had not handled the pressure well and had to work on their mental approach as well as their technical skills.
"Situations come along and they don't cope, so I've got to teach them. There is a lot of inexperience, but there are no senior players so it will come from me - and Tamim and his work ethic," the Australian commented.
"It was set up for us to make a score of 450 or more [in the first innings] but for some unknown reason our better players didn't cope in these conditions and it's really disappointing," he added.
Bangladesh will now head for Sri Lanka for the Asia Cup, also involving India and Pakistan, before returning in July for three one-day internationals against England, followed by matches against Scotland, Ireland and the Netherlands.
Skipper Shakib Al Hasan admitted they were better in the shorter forms of the game but insisted they were "improving every day" as Test players.
"We didn't want to finish the series like this. We've done well for the last 12 months but this match ran away [from us]," he said.
"There are some positive things we can learn but our middle order batsmen need to work."
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