Hannah leads British 1-2-3 to Paralympic victory
IPC Athletics World Championships
Britain's Hannah Cockroft (c), Mel Nicholls (L) and Kare Adenegan secured podium finishes in the T34 800m
Hannah Cockroft led home a British 1-2-3 to win gold in the T34 800m
Paralympic champion Cockroft, 23, beat team-mate Mel Nicholls into second with 14-year-old Kare Adenegan in third.
Cockroft has expressed fears about her T34 category, with only five athletes from three nations taking to the line for the 800m.
The event is being held at a Worlds for the first time since 1998 and is also scheduled to be part of the Rio 2016 Paralympic programme.
Yorkshire's Cockroft has urged the International Paralympic Committee (IPC) to show faith in the category for the future.
"I believe we can fill heats and fill finals when it comes to Rio so please don't take our event away," she told BBC Sport after her victory.
"We were missing Rosemary Little from Australia, who was taken to hospital before the competition started, and there are other nations who aren't here because it isn't a Paralympic Games and they can't afford to send athletes.
"The IPC are doing a great job and our class is growing compared to when I started in 2011, so give us time and we will be there and will do well."
Cockroft, who won 100m gold on the opening day of the competition and will face Nicholls and Adenagen again in the 400m on Saturday, added: "We talked about the 1-2-3 but none of us thought it would happen.
"It is so exciting. We all had our separate plans and strengths so the fact it all pulled together we couldn't have asked for much more.
"I knew that if I went at 200m then I was pretty confident I was going to get it, but I've never been more nervous than I was out there."