Hannah Cockroft, Sophie Kamlish and Olivia Breen won gold for Britain on day four of the World Para-athletics Championships at London Stadium.
Cockroft, 24, was first in the T34 800m, following her success in the 100m on Friday and can complete the treble with victory in the 400m.
Team-mate Kare Adenegan finished third to add bronze to her 100m silver.
Kamllish, 20, secured the T43/T44 100m title and Breen won the T38 long jump with a personal best of 4.81m.
Britain’s Richard Whitehead, who won T42 200m gold on Saturday, took bronze in the 100m, but Britain dropped behind the United States into second in the medal table with 20 in total and 11 golds.
Cockroft, who races in a category for athletes who have cerebral palsy and are in a wheelchair, remains undefeated in major competitions.
She has now won nine world titles, to go with her five Paralympic gold medals, and will repeat her trebles at the 2015 World Championships and 2016 Paralympics with success in the 400m later in the week.
“I’m really happy with that race. I knew I was in for a good time,” she told BBC Radio 5 live.
“I’m not at full fitness. I feel like I’m smoking 100 cigarettes a day. Hopefully I’ll have more of a voice by the 400m (on Thursday). I love the 400m.”
Adenegan, 16, matched her bronze in this event from Rio and at the 2015 Worlds, while team-mate Carly Tait finished fourth.
Read more at: http://www.bbc.com/sport/athletics/40628963