Weir celebrates his victory after crossing the line

Weir won in a time of three minutes, 15.89 seconds ahead of Mexico's Saul Mendoza and Australia's Kurt Fearnley.

There was more British success when Tanni Grey-Thompson took silver in the T53 800m behind Amanda McGrory.

Bath sprinter Ben Rushgrove claimed bronze in the T36 200m, with compatriot Graeme Ballard finishing fourth.

It was Rushgrove's first medal at a major international championships and he earned it with a personal best time of 25.44 seconds.

"It wasn't my best start but I just kept powering and managed to pull them back," he said.

Graeme Ballard just missed his second medal of the championships when he finished fourth.

The haul brought the team's medal tally to five golds, five silvers and four bronzes in the first four days of the competition.

Earlier in the day Weir had also won in both the heats and the semi-finals of the T54 100m, breaking David Holding's championship record of 14.60 seconds in the first race.

Grey-Thompson, who had been ill earlier in the week, said: "I thought I would struggle for a medal, but if I pushed really well I could get a bronze, so getting a silver was really good.

"There was nothing left at the end. If it had been a fast race I wouldn't have been able to hang in there."

Grey-Thompson struck silver after earlier finishing as fastest qualifier in the T53 semi-finals to reach Thursday's final.

Cardiff's Lloyd Upsdell finished just outside the medals in a superb 100m T35 CP race.

The gold medal was won by South African sprinter Teboho Mokgalagadi in a new world record time of 12.98 seconds.

"I thought I had a good chance of getting bronze but unfortunately I just couldn't do it on the day."

Meanwhile fellow Cardiff athlete Tracey Hinton had better news when she was told she had won silver in Tuesday's T12 800m. Hinton was initially disqualified but the decision has now been reversed.

South African sprint star Oscar Pistorious just held off American Brian Frasure to win the men's 100m T44 final.