Sprinter Richard Whitehead has powered to gold on the track, breaking his own world record to take victory in the 200-metres T42 final as ParalympicsGB moved to second in the medal table.
The 36-year-old double amputee stormed home with enough time for a "two-gun salute" bicep flex as he crossed the line.
Just minutes later Natasha Baker won ParalympicsGB's first equestrian gold medal at Greenwich Park.
The 22-year-old fought back emotion as she triumphed in the Grade II individual championship on her Paralympic Games debut.
The twin victories came as the British team won three gold and two bronze medals before lunchtime on a morning of world records at the Games.
Richard Whitehead crosses the line with a "two-gun salute" Cycling pair Neil Fachie and Barney Storey produced a stunning performance in the velodrome to take gold in the tandem 1km time-trial in a world record time.
Whitehead, from Nottingham, said of his world-beating victory: "It's all about guts and determination. Today I came, I saw, I conquered.
"That was what the two-gun salute was all about - in honour of my hero Chris Hoy."
He dedicated the win to his family, including his fiancee Valerie Davies, who is expecting their first child in January.
Seconds after the phenomenal win, Valerie tweeted: "Love u baby. At finish line! We are all so proud of u! Love val, bump, mum & dad!!! #proudmoment."
Gold medallists Neil Fachie, left, and Barney Storey, right, on the podium Also at the Olympics Stadium, Gemma Prescott, 28, won bronze in the F32 club throw, with Rob Womack, 41, matching the feat in the shot put.
The successes set up an exciting afternoon at the Games, which promises to deliver more medals.
Lee Pearson will be looking for success in the dressage before darling of the pool Ellie Simmonds defends her title in the 400m freestyle, after powering through her heat in a personal best time this morning.
ParalympicsGB now has 27 medals, including seven gold, 11 silver and nine bronze.
