Pakistan v England: Brendon McCullum says his side became 'almost perfect' in 3-0 win

England secured an eight-wicket win on the fourth morning of the Third Test in Karachi to become the first team to leave Pakistan with a 3 -0 win.

"It's incredibly satisfying, it's been an amazing four weeks," McCullum told Test Match Special.

"We'll be leaving this tour knowing that we have achieved something very special and will never forget."

Before this tour, England had not beaten Pakistan in a Test outside the UK nor for 22 years and had only won two away matches in 30 attempts against the same opposition.

But in their first Test series in Pakistan since 2005, England recorded just their fourth clean 3-0 sweep against any team.

In the first Test at Rawalpindi, England went 506-4 on day one, but only took victory on incredibly flat ground in a light declining at the end of the fifth day.

< p class="" data-reactid=".ho4y9h2lrg.0.0.0.1.$paragraph-9">A tense finish in the second test in Multan allowed the England to win by 26 points, then emphatic victory in the final in Karachi came after suffering the hurdle of losing the draw.

This all happened in the con text of a disease that persists the team since the first day of the first test was at risk of being delayed for 24 hours.

"Each pitch challenged us in different ways," said New Zealander McCullum. "Some challenged us tactically, some challenged us technically, and some challenged us mentally.

"Then, you add the guys were really sick on this tour. To say that they were able to play the style of cricket in the conditions that we have on these three different grounds, we got closer to perfection."

The tour saw the emergence of hitter Harry Brook, who scored hundreds in each of three Tests.

Brook got his chance after Jonny Bairstow broke his leg, but McCullum said Bairstow would return to the team "as soon as he was fit".

England also made 18-year-old Rehan Ahmed their youngest man to play international cricket in the final test, the leg spinner taking 5-48 in round two.

McCullum thinks Ahmed could continue his development in Franchise Cricket - The Leicestershire man is listed in the Indian of Friday Premier League Auction.

"The important thing now is that we continue to look after him," McCullum said. "I will encourage him to play as much franchise cricket and gain as much experience around the world and play with different players, under different trainers and in different conditions.

"It would be nice if IPL picked it up. Why not give him this opportunity to rub shoulders with other players and gain these experiences? What other 18-year-old will have these chances? He is an international cricketer in his own right."

England have now won...