Swann and Broad undermine Pakistan after Morgan provides platform for series-clinching win

England's mettle has been tested amid the ceaseless controversies of the past three weeks yet – thanks largely to Morgan – they recovered their composure on cue to halt Pakistan's fightback from

2-0 down.

They therefore achieved their ambition of six consecutive series victories, across all formats this summer, despite the unwanted and at times all-consuming distractions of spot-fixing crises which have dominated Pakistan's limited-overs campaign.

The tourists began their chase of 256-6 with a hectic opening stand but faltered alarmingly under lights as Stuart Broad and then Graeme Swann (3-26) each put themselves on a hat-trick and all 10 wickets fell for 72 runs in an anti-climactic 135 all out in 37 overs.

But it was Morgan's unbeaten 107 – back at the scene of his match-winning hundred against Australia in June – which was the main reason for England's success.

Pakistan by contrast will have little to smile about as they board the plane back home this morning after an arduous and hugely stressful three-month tour.

Morgan and Paul Collingwood shared a fifth-wicket stand of 93, after Shoaib Akhtar (3-40) had put England in an awkward spot in front of a noisy and partisan crowd.

Collingwood's innings was interrupted by a migraine, and Ian Bell needed a runner because of an apparent groin strain.

But Morgan was in rude health as he demonstrated his limited-overs prowess in a 97-ball century containing eight fours and a six.

Andrew Strauss and Steve Davies had produced an encouraging start for England to a match which had clearly caught the public's imagination, against the backdrop of ill-feeling and series deadlock.

But after England had won an important toss on a glorious afternoon, Mohammad Hafeez broke an opening stand of 31 in the sixth over when Davies went down the pitch, missed an off-break and was stumped.

Veteran Shoaib was cranking up the pace like someone with several points to prove and in an atmosphere verging on the poisonous, he made short work of Jonathan Trott.

An over later, Shoaib had his second wicket at the cost of only one run, Strauss finally nicking one behind having played and missed several times.

Bell and Morgan dug in until the Warwickshire batsman was bowled via bat and pad on the back foot by Shahid Afridi.

Morgan was joined by Collingwood again with the score on 106, and the pair did well to get England into position to attack the last 10 overs.

Boundaries were scarce on this big playing area, but Morgan and Collingwood were resourceful with their chips into gaps.

Collingwood fell three short of his 50, bowled trying to attack Gul in the powerplay. But he had done the spadework for Morgan and Tim Bresnan's late charge, which culminated in 19 runs from Saeed Ajmal's last over.

Pakistan's rapid response soon had to be reassessed as wickets began to tumble.

Broad took two wickets in two balls – Collingwood took a memorable catch high to his right to dismiss Mohammad Hafeez and then Asad Shafiq went for a first-ball duck.

Swann emulated Broad, Mohammad Yousuf and Shahid Afridi the men to go in two balls.

More than 23 overs elapsed without a Pakistan boundary, and the game and series was up as the tourists ended their impossibly irksome tour with barely a whimper of defiance.